CHAPTER 5 FINITE ELEMENT ANALYSIS AND AN ANALYTICAL APPROACH OF WARM DEEP DRAWING OF AISI 304 STAINLESS STEEL SHEET
|
|
- Grace Watson
- 6 years ago
- Views:
Transcription
1 97 CHAPTER 5 FINITE ELEMENT ANALYSIS AND AN ANALYTICAL APPROACH OF WARM DEEP DRAWING OF AISI 304 STAINLESS STEEL SHEET 5.1 INTRODUCTION Nowadays, the finite element based simulation is very widely used by many researchers to analyze the sheet metal processes successfully. Accurate prediction of the effects of various process parameters on the detailed metal flow became possible only recently, when the finite element method was developed for the analyses (Shiro Kobayashi et al 1989).The finite element based simulations are carried out in order to investigate the maximum drawing loads, the thickness, radial and hoop strains all expressed in percentages, in warm deep drawing of circular cups from AISI 304 stainless steel sheets. The finite element results at room temperature and at different experimented warm temperatures are compared with those of the experimental values for validation. Many researchers tried the analytical method to find out the thickness distribution in the deep drawn cup, LDR value, height of the drawn cup and the drawing force in the conventional deep drawing process. Very few researchers used the analytical methods in warm deep drawing process and still much to be developed in this regard. To name the few researchers used analytical methods are: Korhonen (1982), Ramaekers et al (1994), Cho et al (2002), Cwiekala et al (2011), Bai et al (2011) in conventional deep
2 98 drawing ; Swadesh Kumar Singh and Ravi Kumar (2005), Azodi et al (2008) in hydro-mechanical deep drawing; Chandra and Kannan (1992) (i & ii), Jung-Ho Cheng (1996), Hwang et al (1997) in super plastic forming and Hong Seok Kim et al (2008) in warm deep drawing. From the literature survey, it is observed that most of the current research work in warm deep drawing are concentrated on the experimental and FE simulations alone and very little focus has been made on analytical methods. In this research work, an attempt is made to analytically find out some of the parameters like thickness distribution in the deep drawn cup, LDR value, drawing force in warm deep drawing process of AISI stainless steel sheet at different temperatures ranging from room temperature to 300 o C. The calculated values by analytical methods are compared with those of the experimental and FE simulations results for its accuracy of prediction. 5.2 FINITE ELEMENT ANALYSIS ON WARM DEEP DRAWING In metal forming technology, proper design and control requires, among other things, the determination of deformation mechanics involved in the processes. Without the knowledge of the influences of variables such as material properties, workpiece geometry, friction and contact conditions on the process mechanics, it would not be possible to design the dies and equipments adequately, or to predict or prevent the occurrence of defects in the components produced. Thus, process modeling for computer simulation has been a major concern in modern metal forming technology Commercially Available Software Packages for Finite Element Analysis on Warm Deep Drawing There are many commercially available software packages for finite element method such as NUMISHEET 93, DEFORM, AUTOFORM,
3 99 DD3IMP, LS-DYNA, MSC.MARC, PAM-STAMP, ANSYS and ABAQUS etc. 2-Dimensional (2D) and 3-dimensional (3D) simulation for finite element analysis is possible in these software packages. Recently, Mark Colgan and John Monaghan (2003) have combined experimental and finite element analysis using the program AUTOFORM and Padmanabhan et al (2007) have performed the finite element method combined with Taguchi technique using deep drawing 3 dimensional implicit codes (DD3IMP) to analyze the deep drawing operation ABAQUS Software Package The ABAQUS software is a product of Dassault systèmes simulia corporation, USA. ABAQUS/CAE is a complete ABAQUS environment that provides a simple, consistent interface for creating, submitting, monitoring and evaluating results from ABAQUS/Standard or ABAQUS/Explicit simulations. Different modules are available in ABAQUS/CAE such as defining the geometry, defining the material and generating the mesh etc., and each module defines a logical aspect of modeling process. Once all or required modules are defined, a model is built from which the ABAQUS/CAE generates an input file which is submitted to ABAQUS/Standard or ABAQUS/ Explicit for analysis. Analysis is performed and the information is sent to the ABAQUS/CAE so that the user can know the progress of the job and any error indicated can be rectified. Once the input is accepted successfully, the job is analyzed and the result database is generated. Finally the visualization module helps to read the output database and to view the results of the analysis. The meshing of parts of the model is very important in any analysis by finite element method. In ABAQUS, there are many types of elements that are available for meshing. To name a few, the widely used softwares are:
4 100 CAX4R- 4 node, reduced integration, axisymmetric quadrilateral element, SAX1- first order, axisymmetric shell element, S4R- first order, finite strain quadrilateral shell element, MAX1 first order, axisymmetric membrane element etc (ABAQUS user s manual 2009) Finite Element Analysis of Warm Deep Drawing of AISI 304 Stainless Steel Using ABAQUS Software Package The finite element method (FEM) based simulations of deep drawing using ABAQUS/CAE at room temperature, 100 o C, 200 o C, and 300 o C are carried out for a circular shaped cups which are drawn from AISI 304 stainless steel sheet. The results from the simulations are compared with the experimental values with respect to the maximum drawing load, strains like thickness strains, radial strains and hoop strains. In deep drawing, the metal is held between the die and the blank holder and the punch forces the material into the die to form a component with the desired size and shape. The ratio of drawing against stretching is controlled by the force on the blank holder and the friction conditions at the interfaces between blank-die and blank holder- blank. Higher blank holder force and friction at these interfaces limit the slip at the interface and increases the radial stretching of the blank. So, it is essential to control the slip at these interfaces in order to deep draw successfully. Rupture or necking occurs, if the slip is restrained too much, due to the severe stretching of the material, whereas, wrinkles will form, if the material flows very easily into the die and so proper interface conditions are very much important for the satisfactory results during deep drawing process simulation (ABAQUS user s manual 2009). The flow chart of methodology used for the FEM based simulation of deep drawing of circular cups is shown in Figure 5.1.
5 Figure 5.1 Flowchart for FEM simulation methodology 101
6 Finite element model and geometry All finite element models are created using ABAQUS/CAE pre processor which are analyzed in this study and investigations. The axisymmetric FEM model created for analysis is shown in the Figure 5.2 and the 3D model is shown in the Figure 5.3. PUNCH Ø Ø 20 R 5 BLANK HOLDER 1.0 BLANK R 6 Ø 42 Ø DIE All dimensions in mm Figure 5.2 Finite element model of circular cup deep drawing Figure 5.3 3D Model for FEM simulation of deep drawing process
7 103 For the analysis in ABAQUS/CAE, the punch, die, and the blank holder are modeled as analytically rigid surfaces whereas only the blank is defined as deformable body. The blank is meshed by the element CAX4R, a four node bilinear axisymmetric quadrilateral elements with reduced integration. These elements belong to the family of solid elements and are of the first order, which means that the strain is computed as an average over the element volume instead of the first order gauss point (Magnus Söderberg 2006). The feature of reduced integration used in the CAX4R element causes the integration order to be lower than full integration; in this case only one integration point in the centre of the element is used. With the use of reduced integration, the number of constraints which are introduced by the elements is reduced, and this prevents locking in the elements causing a stiff response. The drawback of this technique is that no energy is registered in the element integration point for certain modes of deformation and these modes are usually referred to as hourglass mode which is addressed in ABAQUS using hourglass control algorithm (Magnus Söderberg 2006). The blank is modeled using 20 elements of type CAX4R in order to match with the grid pattern used in the experimental analysis. These meshes are coarser for this analysis. However, since the primary interest in this problem is to study the membrane effects, the analysis will still provide a fair indication of stresses and strains occurring in the process. Thickness changes and membrane effects are modeled properly with CAX4R element however, the bending stiffness of the element is very low. The element does not exhibit locking due to incompressibility and the element is very cost- effective due to lesser computational time when compared to other elements (ABAQUS user s manual 2009).
8 Material properties The material used in the simulation of deep drawing process and the important properties of the material are shown in the Table 5.1. Table 5.1 Important material properties of AISI304 austenitic stainless steel used in FEM simulations S.No. Property Value 1 Density 7.8 g/cc 2 Young s modulus 210 GPa 3 Poisson ratio 0.3 The plastic stress-strain values used in this analysis are from the flow curves of stainless steel 304 obtained experimentally up to the temperatures of 200 o C by Eren Billur et al (2009). The stress values for the corresponding strain values for 300 o C are extrapolated by numerical method. The material model used in these analyses is isotropic Von Mises hardening model Contact and boundary conditions The contact between the blank and the tools is enforced by a kinematic contact condition, using pure master-slave surface pairs established in the first step of the solution. The surfaces of the analytically rigid bodies are defined as the master surfaces and the surfaces defined on the blank form the slave surfaces. The friction between the contact surfaces is implemented with a coulomb model. The boundary conditions are defined for each step of the simulation which defines the displacement of the blank, punch, die, and blank holder and the type of loading.
9 Loading conditions The entire finite element analysis is carried out in five steps. In the first step, the blank holder is moved onto the blank with the prescribed displacement to establish the contact. The second step involves the removal of the boundary condition and application of the blank holder force of 100 KN and this force is kept constant for step 2 and 3. The third step is the actual deep drawing process in which the punch pushes the blank with the defined punch force of 300 KN into the die through a total distance of 32 mm, that is, the height of the cup (30 mm) plus the initial clearance (2 mm) between the punch and the top surface of the blank. The important process parameters used during the deep drawing step is shown in the Table 5.2. In the fourth step, all the nodes of the model are fixed in their current position and the contact pairs are removed from the model and the last step is to withdraw the punch back to its original position. Table 5.2 Important process parameters used in FEM simulations S.No. Process parameter Value 1 Punch speed 60 m/min 2 Friction coefficient (ABAQUS user s manual 2009) (a) Blank-punch 0.25 (b) Blank-die 0.10 (c) Blank-blank holder Assumptions Made in the Simulations (i) The material is assumed to be isotropic which means that it has similar properties in all directions.
10 106 (ii) The material is assumed to satisfy the relationship between the true stress and true strain given by Hollomon (1945) which is mathematically expressed by the equation (5.1). = K n (5.1) (iii) The mechanical interaction between the contact surfaces is assumed to be the frictional contact. (iv) For shells and membranes, the thickness change is calculated from the assumption of incompressible deformation of the material. (v) It is assumed that no reverse loading occurs during simulation and so the Bauchinger effect is not modeled. 5.3 APPLICATION OF ANALYTICAL METHOD IN WARM DEEP DRAWING Flow Stresses and Strains in Warm Deep Drawing of Stainless Steel Sheet The flow stress and strain of the material is very important parameter in deciding the forming characteristics of the material especially in deep drawing operation. There are many constitutive material equations are available to relate the flow stress and the flow strain which is known as the flow curve equation and depending on the situation, the appropriate equation may be used for accurate results. The flow stress and strain values of AISI 304 stainless steel sheet material with 1.0 mm thickness for the analytical and FEM simulations in this research work are used from the experimental values obtained by hydraulic bulge test at various temperatures and strain rates by Eren Billur et al (2009).
11 107 In this work, it is assumed that the material obeys the Hollomon strain hardening equation (5.1) = K n The parameters K and n are determined by fitting the equation (5.1) using least square method and the flow stresses are calculated for the different strains and also for different temperatures up to 200 o C Thickness Distribution in the Warm Deep Drawn Cup The change in the thickness of the material, when it is deep drawn from the blank into a desired shape and dimensions, occurs due to plastic deformation and also due to the influence of temperature in warm deep drawing. The prediction of the amount and region of maximum reduction of thickness is the primary concern of the designer in order to design a part without the occurrence of fracture either during manufacturing or while in use in future. A new methodology is developed to calculate the thickness distribution in the warm deep drawn cup of AISI 304 stainless steel material and the steps involved are as follows: (i) For the elements/nodes on the blank which moves on the top surface of the die before reaching the die corner radius while deep drawing, the thickness at the die entry (t e ) is calculated by the equation (5.2) which is derived by Ramaekers et al (1994). = (5.2)
12 108 (ii) When the element bends over the die radius, the change in thickness is calculated using the equation (5.3) given by Marciniak et al (2002). (5.3) where, T 0 0 t 0 (5.4) T y y t 0 (5.5) (iii) When the element leaves the die radius, it unbends and gets straighten and the change in thickness is again calculated using the equation (5.3) (iv) When the element wrap around the punch corner radius also the equation (5.3) is used for calculating the thickness value. (v) Identify the elements which undergo the types of deformation as mentioned above and apply the appropriate equations to determine the final thickness of the element of the deep drawn cup. (vi) The same procedure is adopted for warm deep drawing also by using the corresponding material constants at that temperature. In the experimental study of the present work, the measurements are made at the positions of 0, 6, 12, 18, 24, 30, 36 and 42 mm from the center of the blank. For the analytical prediction also, the same nodes/ elements are considered in order to compare the calculated values with those of
13 109 experimental and FEM simulation results. The types of deformation that the nodes/elements undergo are stated below: (i) The node/element at 42 mm and 36 mm move along the top surface of the die and bend at the die corner radius. (ii) The node/ element at 30 mm and 24 mm move along the top surface of the die and bend as well as unbend to straighten at the die radius. (iii) The node/ element at 18 bend and unbend at the die radius and also bend at the punch corner radius. (iv) The node/ element at 12 mm, 6mm and center of the blank theoretically do not undergo any deformation and the thickness remains unchanged. It is assumed that the value of 0 = 0.01, since the pre strain, in most of the cases, is less than 0.01 (Ramaekers et al 1994). For AISI 304 stainless steel, R = 1 ; y = 262 MPa Initial thickness of the blank (t 0 ) = 1.0 mm The value of 0 is calculated using the values of 0, appropriate K and n from the equation (5.1) Analytical Method of Determination of LDR Values and Height of the Deep Drawn Circular Cup The LDR values at different temperatures are calculated using the equation (5.6) from the literature of Swadesh Kumar Singh and Ravikumar (2005).
14 110 = + 1 (5.6) The drawing efficiency ( ) for different temperatures are initially assumed and finally checked with the experimental drawing efficiency values by using the equation 5.7 from George E. Dieter (1987). Since the flow stress values are decreased when the temperature is increased, the assumed drawing efficiencies are 70% at room temperature (Kurt Lange 1985), 80% at 100 o C, 90% at 200 o C, and 95% at 300 o C. LDR e (5.7) The deep drawn height of the cup is determined by the equation (5.8) (Marciniak et al 2002). 1 (5.8) Analytical Method of Determining the Punch Force The punch force excluding the blank holding force, force required to overcome the friction, die cushion force and consideration of the factor of safety is calculated from the equation (5.9) given by Korhonen (1982). F p = (5.9) Since the flow stress, yield stress and ultimate tensile strength are decreased, when the temperature is increased, it is assumed that the ultimate tensile strength decreased by 15% when the temperature is increased from room temperature to 100 o C; further decreased by 10% of the stress value at
15 o C, when the temperature is increased from 100 o C to 200 o C; and finally, decreased by 10% of the stress value at 200 o C, when the temperature is increased from 200 o C to 300 o C. The punch force is calculated at different temperatures and compared with the punch force obtained in the experiments. 5.4 SUMMARY Finite element based simulations of deep drawing of stainless steel AISI304 circular cups are carried out using ABAQUS/CAE software at different temperatures from room temperature (30 o C) to 300 o C at an increment of 100 o C. The results of FEM simulations on drawing loads, the maximum thinning region location and thickness, radial and hoop strain measurements are compared with those of experimental results for validation. A new methodology for the determination of thickness distribution using analytical method in the warm deep drawn cup is proposed and the LDR values, height of the deep drawn cups and the punch force at different temperatures are calculated using the analytical methods which are used for conventional deep drawing process by determining the materials constants of the strain hardening equation at each temperature. The results of analytical methods are compared with those of experimental results for its accuracy of predictions.
Simulation studies on Deep Drawing Process for the Evaluation of Stresses and Strains
International Journal of Computational Engineering Research Vol, 03 Issue, 4 Simulation studies on Deep Drawing Process for the Evaluation of Stresses and Strains A.Purushotham Department of Mechanical
More informationNumerical analysis of wrinkling phenomenon in hydroforming deep drawing with hemispherical punch
Numerical analysis of wrinkling phenomenon in hydroforming deep drawing with hemispherical punch H. Ziaeipoor, S. Jamshidifard, H. Moosavi, H.Khademizadeh Department of mechanical engineering, Room:55
More information2. LITERATURE REVIEW
2. LITERATURE REVIEW For defining the goal of research, in this section a brief overview of Sheet metal forming, Bulk metal forming, Incremental forming process, FEM analysis, System Design approach, numerical
More informationAbstract. 1 Introduction
The analysis of forming process for bimetal materials Stefan Kapinski Institute ofmachine Design Fundamentals Narbutta 84, 02-524 Warszawa, Poland EMail kapinska@sggw.waw.pl Abstract The paper presents
More informationStudy of Roll Forming Bending in Different Temperature
International Journal of Materials Science and Applications 2016; 5(3): 129-135 http://www.sciencepublishinggroup.com/j/ijmsa doi: 10.11648/j.ijmsa.20160503.13 ISSN: 2327-2635 (Print); ISSN: 2327-2643
More informationBuckling of beverage cans under axial loading
Buckling of beverage cans under axial loading Vishwanath Hegadekatte 1 and Yihai Shi 2 1 Novelis Inc. c/o Aditya Birla Science and Technology Company Ltd., Plot No. 1 & 1-A/1, MIDC, Taloja, Navi Mumbai
More informationA STUDY OF FINE BLANKING PROCESS BY FEM SIMULATION. G. Fang, P. Zeng
Key Engineering Materials Vols. 261-263 (2004) pp 603-608 Online available since 2004/Apr/15 at www.scientific.net (2004) Trans Tech Publications, Switzerland doi:10.4028/www.scientific.net/kem.261-263.603
More informationSimulation and Analysis of the Beverage Can Necking Process Using LS-DYNA
8 th International LS-DYNA Users Conference Metal Forming (1) Simulation and Analysis of the Beverage Can Necking Process Using LS-DYNA Jordan-Cordera, A. & Miranda-Valenzuela, J.C. Mechanical Engineering
More informationForming of ultra-high-strength sheet metals with alternating blank draw-in
Forming of ultra-high-strength sheet metals with alternating blank draw-in Ranko Radonjic 1a, Mathias Liewald 1b 1a,b University of Stuttgart, Institute for Metal Forming Technology (IFU) Holzgartenstrasse
More informationDetermination of biaxial flow stress using frictionless dome test
Available online at www.sciencedirect.com Procedia Engineering 00 (2014) 000 000 www.elsevier.com/locate/procedia 11th International Conference on Technology of Plasticity, ICTP 2014, 19-24 October 2014,
More informationEFFECT OF EXTRUSION PARAMETERS AND DIE GEOMETRY ON THE PRODUCED BILLET QUALITY USING FINITE ELEMENT METHOD
EFFECT OF EXTRUSION PARAMETERS AND DIE GEOMETRY ON THE PRODUCED BILLET QUALITY USING FINITE ELEMENT METHOD A.Ε. Lontos 1, F.A. Soukatzidis 2, D.A. Demosthenous 1, A.K. Baldoukas 2 1. Mechanical Engineering
More informationScienceDirect. Deep drawing of cylindrical cup using incremental electromagnetic assisted stamping with radial magnetic pressure
Available online at www.sciencedirect.com ScienceDirect Procedia Engineering 81 (2014 ) 813 818 11th International Conference on Technology of Plasticity, ICTP 2014, 19-24 October 2014, Nagoya Congress
More informationMILD STEEL SHEET METAL FORMING USING ABAQUS SOFTWARE: INFLUENCE OF DRAWBEADS IN MINIMIZE SPRINGBACK
MILD STEEL SHEET METAL FORMING USING ABAQUS SOFTWARE: INFLUENCE OF DRAWBEADS IN MINIMIZE SPRINGBACK Nor Assikin Khamis 1, Suziyani Md Zin 1 and Abdul Rahim Bahari 2 1 Department of Mechanical Engineering,
More informationAvailable online at ScienceDirect. Procedia Engineering 81 (2014 )
Available online at www.sciencedirect.com ScienceDirect Procedia Engineering 81 (014 ) 730 735 11th International Conference on Technology of Plasticity, ICTP 014, 19-4 October 014, Nagoya Congress Center,
More informationMETAL FORMING AND THE FINITE-ELEMENT METHOD SHIRO KOBAYASHI SOO-IK OH TAYLAN ALTAN
METAL FORMING AND THE FINITE-ELEMENT METHOD SHIRO KOBAYASHI SOO-IK OH TAYLAN ALTAN New York Oxford OXFORD UNIVERSITY PRESS 1989 CONTENTS Symbols, xiii 1. Introduction, 1 1.1 Process Modeling, 1 1.2 The
More informationFinite element simulation of the warm deep drawing process in forming a circular cup from magnesium alloy sheet
Scientia Iranica B (2013) 20(4), 1213{1220 Sharif University of Technology Scientia Iranica Transactions B: Mechanical Engineering www.scientiairanica.com Finite element simulation of the warm deep drawing
More informationNumerical Simulation on the Hot Stamping Process of an Automobile Protective Beam
2016 International Conference on Material Science and Civil Engineering (MSCE 2016) ISBN: 978-1-60595-378-6 Numerical Simulation on the Hot Stamping Process of an Automobile Protective Beam Han-wu LIU
More informationTheoretical study on Cold Open Die Forging Process Optimization for Multipass Workability
Theoretical study on Cold Open Die Forging Process Optimization for Multipass Workability Ajitkumar Gaikwad 1-a, Shreyas Kirwai 1, Provat Koley 2, Dr. G. Balachandran 3 and Dr. Rajkumar Singh 1 1 Kalyani
More informationScienceDirect. Springback of extruded 2196-T8511 and 2099-T83 Al-Li alloys in stretch bending
Available online at www.sciencedirect.com ScienceDirect Procedia Engineering 81 (2014 ) 981 986 11th International Conference on Technology of Plasticity, ICTP 2014, 19-24 October 2014, Nagoya Congress
More informationSpringback Prediction in Bending of AHSS-DP 780
Springback Prediction in Bending of AHSS-DP 780 N. Kardes Sever, O. H. Mete, Y. Demiralp, C. Choi, T. Altan Center for Precision Forming (CPF, formerly ERC/NSM) The Ohio State University Columbus, OH ABSTRACT
More informationSimulation Technique for Pre-forming of AHSS Edge Stretching
12 th International LS-DYNA Users Conference Metal Forming(3) Simulation Technique for Pre-forming of AHSS Edge Stretching Xiaoming Chen*, Jixin Sun** and Xinhai Zhu** * United States Steel Automotive
More informationSEISMIC BEHAVIOR OF STEEL RIGID FRAME WITH IMPERFECT BRACE MEMBERS
INTERNATIONAL JOURNAL OF CIVIL ENGINEERING AND TECHNOLOGY (IJCIET) International Journal of Civil Engineering and Technology (IJCIET), ISSN 976 638 (Print), ISSN 976 6316(Online), Volume 6, Issue 1, January
More informationERC/NSM Activities. Research for Industry and Government
/ Activities Research for Industry and Government Stamping Hydroforming Machining Forging / Activities in Tube Hydroforming 1. Materials Determination of material flow stress data for tubular materials
More informationINDEX. forging Axisymmetric isothermal forging, cabbaging, compression of cylinders,
INDEX Accuracy of simulation, 333 Air bending, 21, 141-147 Air rounding, 21 ALPID program, 136 Analysis in metal forming, 26-52 closed-die forging, 34, 35-36, 37 cold extrusion, 39-41 cold forging, 39-41
More informationEffect of Sheet Thickness and Type of Alloys on the Springback Phenomenon for Cylindrical Die
AMERICAN JOURNAL OF SCIENTIFIC AND INDUSTRIAL RESEARCH 01, Science Huβ, http://www.scihub.org/ajsir ISSN: 153-69X, doi:10.551/ajsir.01.3.6.80.86 Effect of Sheet Thickness and Type of Alloys on the Springback
More informationDetailed experimental and numerical analysis of a cylindrical cup deep drawing: pros and cons of using solid-shell elements
Detailed experimental and numerical analysis of a cylindrical cup deep drawing: pros and cons of using solid-shell elements J. Coër a, H. Laurent a, M.C. Oliveira b1, P.-Y. Manach a, L.F. Menezes b a Univ.
More informationDevelop Experimental Setup of Hydroforming to Reduce Wrinkle Formation
Develop Experimental Setup of Hydroforming to Reduce Wrinkle Formation Pruthvi Patel 1, Jahnvi Gaekwad 2, Prem Patel 3, Jaimil Gandhi 4, Mitesh Patel 5 Student, Department of Mechanical Engineering, K.J.
More informationDamage and failure for ductile metals
Damage and failure for ductile metals Damage and failure for ductile metals Introduction Abaqus/Standard and Abaqus/Explicit offer a general capability for predicting the onset of failure, and Abaqus/Explicit
More informationNumerical Analysis of Torsional Behavior of Ultra-High Performance Fiber Reinforced Concrete
Numerical Analysis of Torsional Behavior of Ultra-High Performance Fiber Reinforced Concrete Jongbum Park, Sung-Yong Park, Keunhee Cho, Sung-Tae Kim, Kihyon Kwon, Changbin Joh Researcher, Structural Engineering
More informationThis is an author-deposited version published in: Eprints ID: 15700
Open Archive Toulouse Archive Ouverte (OATAO) OATAO is an open access repository that collects the work of Toulouse researchers and makes it freely available over the web where possible. This is an author-deposited
More informationDIE LESS SINGLE POINT INCREMENTAL FORMING PROCESS OF AA6082 SHEET METAL TO DRAW PARABOLIC CUPS USING ABAQUS
DIE LESS SINGLE POINT INCREMENTAL FORMING PROCESS OF AA6082 SHEET METAL TO DRAW PARABOLIC CUPS USING ABAQUS K. Sai Santosh Kumar M. Tech (AMS), Roll No.: 14011D3318, Department of Mechanical Engineering,
More informationAvailable online at ScienceDirect. Procedia Engineering 183 (2017 )
Available online at www.sciencedirect.com ScienceDirect Procedia Engineering 183 (2017 ) 213 218 17th International Conference on Sheet Metal, SHEMET17 Design of stamping processes of pinless FSWed thin
More informationHydraulic crimping: application to the assembly of tubular components
Journal of Materials Processing Technology 146 (2004) 44 51 Hydraulic crimping: application to the assembly of tubular components Manas Shirgaokar a, Gracious Ngaile a, Taylan Altan a,, Jang-Horng Yu b,
More informationSTRUCTURAL BEHAVIOUR OF HOLLOW STEEL SECTIONS UNDER COMBINED AXIAL COMPRESSION AND BENDING
International Journal of Civil Engineering and Technology (IJCIET) Volume 8, Issue 3, March 2017, pp. 868 877 Article ID: IJCIET_08_03_087 Available online at http://www.iaeme.com/ijciet/issues.asp?jtype=ijciet&vtype=8&itype=3
More informationStudy of Thin-Walled Box Beams Crushing Behavior Using LS-DYNA
11 th International LS-DYNA Users Conference Crash Safety Study of Thin-Walled Box Beams Crushing Behavior Using LS-DYNA Yucheng Liu Department of Mechanical Engineering University of Louisiana Lafayette,
More informationEffect of anisotropy on the hydroforming of aluminum alloy AA6061-T6 using newly developed method
th International Mechanical Engineering Forum Prague 212, 2-22 February 212, Prague Czech Effect of anisotropy on the hydroforming of aluminum alloy AA661-T6 using newly developed method Sh. A. Dizaji
More informationNEW DEVELOPMENTS IN SHEET METAL FORMING
NEW DEVELOPMENTS IN SHEET METAL FORMING Taylan Altan Center for Precision Forming - CPF The Ohio State University Columbus, OH https://ercnsm.osu.edu / https://cpf.osu.edu Overview of CPF activities November
More informationFRAUNHOFER INSTITUTE FOR MACHINE TOOLS AND FORMING TECHNOLOGY IWU SIMULATION IN FORMING TECHNOLOGY
FRAUNHOFER INSTITUTE FOR MACHINE TOOLS AND FORMING TECHNOLOGY IWU SIMULATION IN FORMING TECHNOLOGY 1 SIMULATION IN SHEET METAL FORMING Simulation is an essential part of the development chain, especially
More informationUse of Forming Limit Curve as a Failure Criterion in Maritime Crash Analysis
Use of Forming Limit Curve as a Failure Criterion in Maritime Crash Analysis Bilim Atli-Veltin, Lex Vredeveldt TNO, The Netherlands Abstract Calculation of the energy absorption of marine structures at
More informationStudy on Mixed Mode Crack-tip Plastic Zones in CTS Specimen
Proceedings of the World Congress on Engineering Vol II WCE, July -,, London, U.K. Study on Mixed Mode Crack-tip Plastic Zones in Specimen C. M. Sharanaprabhu, S. K. Kudari Member, IAENG Abstract The studies
More informationREVIEW ON SHEAR SLIP OF SHEAR KEYS IN BRIDGES
REVIEW ON SHEAR SLIP OF SHEAR KEYS IN BRIDGES Benjamin Raison R; Freeda Christy C PG student, School of Civil Engineering, Karunya University. Associate Professor, School of Civil Engineering, Karunya
More informationConcept and manufacture of a hollow crankshaft forming tool
Concept and manufacture of a hollow crankshaft forming tool Sara Tavares Luzia Melo Gamboa Department of Mechanical Engineering, Instituto Superior Técnico, Av. Rovisco Pais, 149-1, Lisbon, Portugal, 214.
More informationPUNCH FORCE BEHAVIOR DURING MICRO V-BENDING PROCESS OF THE COPPER FOIL
International Journal of Technology (017) 7: 1314-130 ISSN 086-9614 IJTech 017 PUNCH FORCE BEHAVIOR DURING MICRO V-BENDING PROCESS OF THE COPPER FOIL Gandjar Kiswanto 1*, Aida Mahmudah 1,, Dedi Priadi
More informationTypes of Strain. Engineering Strain: e = l l o. Shear Strain: γ = a b
Types of Strain l a g Engineering Strain: l o l o l b e = l l o l o (a) (b) (c) Shear Strain: FIGURE 2.1 Types of strain. (a) Tensile. (b) Compressive. (c) Shear. All deformation processes in manufacturing
More informationArch. Metall. Mater. 62 (2017), 2B,
Arch. Metall. Mater. 62 (2017), 2B, 1319-1323 DOI: 10.1515/amm-2017-0201 C.K. LEE*, Y.C. KIM** # A STUDY ON CHANGES IN THICKNESS OF STS304 MATERIAL IN THE PROGRESSIVE DRAWING PROCESS In the drawing process,
More informationEFFECT OF LOCAL WALL THINNING ON FRACTURE BEHAVIOR OF STRAIGHT PIPE
ECF EFFECT OF LOCAL WALL THINNING ON FRACTURE BEHAVIOR OF STRAIGHT PIPE Masato Ono, Ki-Woo Nam*, Koji Takahashi, Kotoji Ando Department of Safety & Energy Engineering, Yokohama National University 79-
More informationJournal of Asian Scientific Research EVALUATION OF RECTANGULAR CONCRETE-FILLED STEEL-HOLLOW SECTION BEAM-COLUMNS
Journal of Asian Scientific Research journal homepage: http://www.aessweb.com/journals/5003 EVALUATION OF RECTANGULAR CONCRETE-FILLED STEEL-HOLLOW SECTION BEAM-COLUMNS Kamyar Bagherinejad 1 ---- Emad Hosseinpour
More informationFINITE ELEMENTSIMULATION IN ORTHOGONAL MACHINING OF INCONEL 718 ALLOY
FINITE ELEMENTSIMULATION IN ORTHOGONAL MACHINING OF INCONEL 718 ALLOY P.DEEPAGANESH. ME CAD/CAM, Shanmuganathan Engineering College, Pudukottai. ABSTRACT Knowing the stringent operating conditions to which
More informationStructure Optimization and Performance Analysis of Subsea High Pressure Wellhead Metal Seal
Send Orders for Reprints to reprints@benthamscience.ae 564 The Open Mechanical Engineering Journal, 2015, 9, 564-568 Open Access Structure Optimization and Performance Analysis of Subsea High Pressure
More informationDesign and Analysis of Multilayer High Pressure Vessels and Piping Tarun Mandalapu 1 Ravi Krishnamoorthy. S 2
IJSRD - International Journal for Scientific Research & Development Vol. 3, Issue 02, 2015 ISSN (online): 2321-0613 Design and Analysis of Multilayer High Pressure Vessels and Piping Tarun Mandalapu 1
More informationINVESTIGATING ALUMINUM SHEET WRINKLING DURING THE DEEP DRAWING PROCESS
Mohammad Reza Foudeh Saeed Daneshmand Halil Ibrahim Demirci ISSN 1333-1124 eissn 1849-1391 INVESTIGATING ALUMINUM SHEET WRINKLING DURING THE DEEP DRAWING PROCESS Summary UDC 621.98:669.71:519.6 The purpose
More informationTransactions on Engineering Sciences vol 7, 1995 WIT Press, ISSN
Analysis of fretting fatigue failure R. Kieselbach, R. Primas Metallic and Ceramic Materials, EMPA-Dubendorf, Abstract The failure of a shaft after a relatively short service life has been analyzed. Based
More informationComputer Simulation of Forging Using the Slab Method Analysis
International Journal of Scientific & Engineering Research Volume 2, Issue 6, June-2011 1 Computer Simulation of Forging Using the Slab Method Analysis S. B. Mehta, D. B. Gohil Abstract Forging is a very
More informationStructural Optimization & Analysis of Heavy Steel Beam for Reduction of Material & Stress Using ABAQUS FE Package
Structural Optimization & Analysis of Heavy Steel Beam for Reduction of Material & Stress Using ABAQUS FE Package O.M.kannan 1, Dr. A. kumaraswamy 2, S.Ramakrishna 3 M.Tech Student, Department of Mechanical,
More informationEffect of beam dimensions on structural performance of wide beam-column joints
Effect of beam dimensions on structural performance of wide beam-column joints J.S. Kuang 1) and *Wing Shan Kam 2) 1), 2) Department of Civil and Environmental Engineering, Hong Kong University of Science
More informationHIERARCHICAL VALIDATION OF FEM MODELS
Krzysztof OSTROWSKI 1 Aleksander KOZŁOWSKI 2 HIERARCHICAL VALIDATION OF FEM MODELS In article are presented results from multistage hierarchical validation of the advanced FEM models used to define rotation
More informationFATIGUE ANALYSIS OF A NOTCHED CANTILEVER BEAM USING ANSYS WORKBENCH. N. Sinan Köksal, Arif Kayapunar and Mehmet Çevik
Proceedings of the Fourth International Conference on Mathematical and Computational Applications June 11-13, 2013. Manisa, Turkey, pp.111-118 FATIGUE ANALYSIS OF A NOTCHED CANTILEVER BEAM USING ANSYS
More informationAssessment of Plastic Flow and Fracture Properties with Small Specimen Test Techniques for IFMIF-Designed Specimens
Assessment of Plastic Flow and Fracture Properties with Small Specimen Test Techniques for IFMIF-Designed Specimens P. Spätig 1, E. N. Campitelli 2, R. Bonadé 1, N. Baluc 1 1) Fusion Technology-CRPP CRPP-EPFL,
More informationA Comparative Study of Failure with Incremental Forming
Journal of Physics: Conference Series PAPER OPEN ACCESS A Comparative Study of Failure with Incremental Forming To cite this article: S.H. Wu et al 2016 J. Phys.: Conf. Ser. 734 032065 View the article
More informationManufacturing (Bending-Unbending-Stretching) Effects on AHSS Fracture Strain
Manufacturing (Bending-Unbending-Stretching) Effects on AHSS Fracture Strain Hong Zhu ArcelorMittal Global R & D - East Chicago Crush Distance (mm) Background 300 250 200 150 100 50 300 600 900 1200 1500
More information1. Consider the following stress-strain responses of metallic materials:
TECNOLOGIA MECÂNICA Mestrado em Engenharia de Materiais January 3, 2015 Number: Name: 1. Consider the following stress-strain responses of metallic materials: Y Load Unload Y E Load E Unload Y (1) (2)
More informationSimulation of Residual Deformation from a Forming and Welding Process using LS-DYNA
13 th International LS-DYNA Users Conference Session: Simulation Simulation of Residual Deformation from a Forming and Welding Process using LS-DYNA Mikael Schill 1, Eva-Lis Odenberger 2 1 DYNAmore Nordic
More informationAluminum Bottle Forming Simulation with Abaqus
Aluminum Bottle Forming Simulation with Abaqus Kunming Mao DASSAULT SYSTEMES SIMULIA CORP., Central Region, West Lafayette, IN, 47906, USA Alejandro Santamaria The Coca Cola Company, One Coca Cola Plaza,
More informationSimulation of finite volume of hot forging process of industrial gear
2012 International Conference on Networks and Information (ICNI 2012) IPCSIT vol. 57 (2012) (2012) IACSIT Press, Singapore DOI: 10.7763/IPCSIT.2012.V57.21 Simulation of finite volume of hot forging process
More informationEstimation of Material Model Parameters from Mixed Loading Test for Effective Simulation of Incremental Sheet Forming
, October 25-27, 217, San Francisco, USA Estimation of Material Model Parameters from Mixed Loading Test for Effective Simulation of Incremental Sheet Forming Pavan Kumar, and Puneet Tandon, Member, IAENG
More informationChapter 14: Metal-Forging Processes and Equipments
Manufacturing Engineering Technology in SI Units, 6 th Edition Chapter 14: Metal-Forging Processes and Equipments Chapter Outline Introduction Open-die Forging Impression-die and Closed-die Forging Various
More informationNON-LINEAR FEM ANALYSIS FOR CES SHEAR WALLS
1NCEE Tenth U.S. National Conference on Earthquake Engineering Frontiers of Earthquake Engineering July 21-25, 214 Anchorage, Alaska NON-LINEAR FEM ANALYSIS FOR CES SHEAR WALLS S. SUZUKI 1, H. KURAMOTO
More informationBending Response and Energy Absorption of Closed-Hat-Section Beams
Modern Applied Science; Vol. 10, No. 11; 2016 ISSN 1913-1844 E-ISSN 1913-1852 Published by Canadian Center of Science and Education Bending Response and Energy Absorption of Closed-Hat-Section Beams Hafizan
More informationEffects of Variable Elastic Modulus on Springback Predictions in Stamping Advanced High-Strength Steels (AHSS)
Effects of Variable Elastic Modulus on Springback Predictions in Stamping Advanced High-Strength Steels (AHSS) H. Kim 1) *, M. Kimchi 1), N. Kardes 2), T. Altan 2) 1) Edison Welding Institute (EWI), Columbus
More informationDeformation Behavior of Ultra-Thin Metal Foils in Strip Drawing Friction Test
Key Engineering Materials Vol. 443 (2010) pp 110-115 (2010) Trans Tech Publications, Switzerland doi:10.4028/www.scientific.net/kem.443.110 Deformation Behavior of Ultra-Thin Metal Foils in Strip Drawing
More informationRecent Developments for Welding Simulations in LS-DYNA and LS-PrePost
14 th International LS-DYNA Users Conference Session: Connections Recent Developments for Welding Simulations in LS-DYNA and LS-PrePost Mikael Schill DYNAmore Nordic AB, Linköping, Sweden Anders Jernberg
More informationPerformance and Optimization of Annular Fins by Using Finite Element Analysis
Performance and Optimization of Annular Fins by Using Finite Element Analysis Kiran Bhadkariya Department of Mechanical Engineering, SISTec-E, Bhopal, Madhya Pradesh, India. Dr. Rohit Rajvaidya Department
More informationModeling the Creep Behavior of Torsional Springs
Visit the SIMULIA Resource Center for more customer examples. Modeling the Creep Behavior of Torsional Springs A. Ramesh, K. Bose and K.M. Lawton Department of Mechanical Engineering and Engineering Science
More informationReduced Ductility due to Local Variation in Material Properties for 3D-printed Components
Reduced Ductility due to Local Variation in Material Properties for 3D-printed Components T. Tryland SINTEF Raufoss Manufacturing, Raufoss, Norway 1 Background It is often useful to have a physical model
More informationAn example of finite element modelling of progressive collapse
COST Action TU0601 Robustness of Structures 2nd and 3rd of March 2009 Coimbra, Portugal An example of finite element modelling of progressive collapse Leslaw KWASNIEWSKI Marian A. GIZEJOWSKI Faculty of
More informationNUMERICAL MACHINING SIMULATION FOR AN AISI 304 STAINLESS STEEL CONSIDERING MICROFRACTURE MECHANICS ASPECTS
Copyright 2013 by ABCM NUMERICAL MACHINING SIMULATION FOR AN AISI 304 STAINLESS STEEL CONSIDERING MICROFRACTURE MECHANICS ASPECTS Gil Magno Portal Chagas University of Sao Paulo USP Polytechnic School
More informationFE ANALYSIS OF RUNNER BLADE FOR WELLS TURBINE
Int. J. Mech. Eng. & Rob. Res. 2014 Kevin A Patel and Devendra A Patel, 2014 Research Paper ISSN 2278 0149 www.ijmerr.com Vol. 3, No. 3, July 2014 2014 IJMERR. All Rights Reserved FE ANALYSIS OF RUNNER
More informationPerformance based Displacement Limits for Reinforced Concrete Columns under Flexure
Performance based Displacement Limits for Reinforced Concrete Columns under Flexure Ahmet Yakut, Taylan Solmaz Earthquake Engineering Research Center, Middle East Technical University, Ankara,Turkey SUMMARY:
More informationMechanical and Forming Properties of AA6xxx Sheet from Room to Warm Temperatures
Proceedings of the 12th International Conference on Aluminium Alloys, September 5-9, 21, Yokohama, Japan 21 The Japan Institute of Light Metals pp. 1243-1248 1243 Mechanical and Forming Properties of AA6xxx
More informationFatigue Crack Growth Analysis of Structural Components - the UniGrow Two-Parameter Driving Force Model
Fatigue Crack Growth Analysis of Structural Components - the UniGrow Two-Parameter Driving Force Model S. Mikheevskiy 1, G. Glinka 1 and D. Algera 2 1 University of Waterloo, Department of Mechanical Engineering,
More informationSheet Metal Forming FUNDAMENTALS. Edited by Taylan Altan and A. Erman Tekkaya
Sheet Metal Forming FUNDAMENTALS Edited by Taylan Altan and A. Erman Tekkaya Materials Park, Ohio 44073-0002 Copyright 2012 by All rights reserved No part of this book may be reproduced, stored in a retrieval
More informationUniversity of Huddersfield Repository
University of Huddersfield Repository Radhi, H.E. and Barrans, Simon Finite Element Analysis of Effect of Weld Toe Radius and Plate Thickness on Fatigue Life of Butt Welded Joint Original Citation Radhi,
More informationNon Linear Analysis of Composite Beam Slab Junction with Shear Connectors using Ansys.16
International Journal of Engineering Science Invention ISSN (Online): 2319 6734, ISSN (Print): 2319 6726 Volume 5 Issue 4 April 2016 PP.22-29 Non Linear Analysis of Composite Beam Slab Junction with Shear
More informationCENTER FOR PRECISION FORMING (CPF) Membership Benefits (June 2015) (www.cpforming.org and
College of Engineering CENTER FOR PRECISION FORMING (CPF) Membership Benefits (June 2015) (www.cpforming.org and www.ercnsm.org) Engineering Research Center for Net Shape Manufacturing 339 Baker Systems
More informationNumerical Analysis of the Influence of Geometry of Ceramic Units (Blocks) on Structural Walls
Journal of Civil Engineering and Architecture 1 (216) 44-52 doi: 1.17265/1934-7359/216.1.5 D DAVID PUBLISHING Numerical Analysis of the Influence of Geometry of Ceramic Units (Blocks) on Structural Walls
More informationSOIL PRESSURE IN EMBANKMENT STABILIZATIONS
SOIL PRESSURE IN EMBANKMENT STABILIZATIONS Analysis of the 3D shadowing effect of piles Dipl.-Ing. M. Filus Fides DV-Partner GmbH ABSTRACT: Pile checks required by the codes alone are usually not sufficient
More informationANALYSIS OF ENERGY ABSORPTION TUBES (CRUSH CAN)
ANALYSIS OF ENERGY ABSORPTION TUBES (CRUSH CAN) Upkar mane 1, Prof. S.S. Mashyal 2 1Post Graduate Student, Department of Mechanical Engineering, MMEC Belgaum, Karnataka, India 2Professor, Department of
More informationIGC. 50 th INDIAN GEOTECHNICAL CONFERENCE PERFORMANCE ENHANCEMENT OF ISOLATED FOOTING WITH MICRO-PILES
5 th IGC 5 th INDIAN GEOTECHNICAL CONFERENCE 17 th 19 th DECEMBER 215, Pune, Maharashtra, India Venue: College of Engineering (Estd. 1854), Pune, India PERFORMANCE ENHANCEMENT OF ISOLATED FOOTING WITH
More informationA Review of Suitability for PWHT Exemption Requirements in the Aspect of Residual Stresses and Microstructures
Transactions, SMiRT-23 Division IX, Paper ID 612 (inc. assigned division number from I to X) A Review of Suitability for PWHT Exemption Requirements in the Aspect of Residual Stresses and Microstructures
More informationApplication of Mechanical Trimming to Hot Stamped 22MnB5 Parts for Energy Saving
INTERNATIONAL JOURNAL OF PRECISION ENGINEERING AND MANUFACTURING Vol. 15, No. 6, pp. 1087-1093 JUNE 2014 / 1087 DOI: 10.1007/s12541-014-0441-7 Application of Mechanical Trimming to Hot Stamped 22MnB5 Parts
More informationThermal Expansion & Helical Buckling of Pipe-in-Pipe Flowline Systems
Thermal Expansion & Helical Buckling of Pipe-in-Pipe Flowline Systems Brian W. Duffy, Liang-Hai Lee, and Mark Brunner Genesis Abstract: Helical buckling analyses are performed primarily to determine the
More informationFinite Element Simulation of Flashless Radial Extrusion Process
IOSR Journal of Mechanical and Civil Engineering (IOSR-JMCE) e-issn: 2278-1684,p-ISSN: 2320-334X, Volume 14, Issue 4 Ver. III (Jul. Aug. 2017), PP 79-83 www.iosrjournals.org Finite Element Simulation of
More informationSimulation of Hot Extrusion of an Aluminum Alloy with Modeling of Microstructure
Simulation of Hot Extrusion of an Aluminum Alloy with Modeling of Microstructure A. Ockewitz, a, D.-Z. Sun,b, F. Andrieux,c and S. Mueller 2,d Fraunhofer Institute for Mechanics of Materials IWM, Woehlerstrasse,
More informationBehaviour of Concrete Filled Rectangular Steel Tube Column
IOSR Journal of Mechanical and Civil Engineering (IOSR-JMCE) ISSN: 2278-1684 Volume 4, Issue 2 (Nov. - Dec. 2012), PP 46-52 Behaviour of Concrete Filled Rectangular Steel Tube Column Anil Kumar Patidar
More informationTitle: Large Deflections
Na Hrebenkach 55, 150 00 Prague 5, Czech Republic Phone.: +420 220 610 018, Fax: +420 220 612 227 E-mail: cervenka@cervenka.cz Web: http://www.cervenka.cz Title: Large Deflections Report number: 2010-06-09-0018
More informationFailure pressure and fatigue analysis of the API 12F shop welded, flat bottom tanks
Purdue University Purdue e-pubs Open Access Theses Theses and Dissertations 4-2016 Failure pressure and fatigue analysis of the API 12F shop welded, flat bottom tanks Andres E. Rondon Andueza Purdue University
More informationMECHANICAL PROPERTIES PROPLEM SHEET
MECHANICAL PROPERTIES PROPLEM SHEET 1. A tensile test uses a test specimen that has a gage length of 50 mm and an area = 200 mm 2. During the test the specimen yields under a load of 98,000 N. The corresponding
More informationResidual stress influence on material properties and column behaviour of stainless steel SHS
Residual stress influence on material properties and column behaviour of stainless steel SHS Michal Jandera Josef Macháček Czech Technical University in Prague residual stresses: austenitic steel grade
More informationNonlinear Finite Element Modeling & Simulation
Full-Scale Structural and Nonstructural Building System Performance during Earthquakes & Post-Earthquake Fire A Joint Venture between Academe, Industry and Government Nonlinear Finite Element Modeling
More informationVOL. 11, NO. 16, AUGUST 2016 ISSN ARPN Journal of Engineering and Applied Sciences
COMPARISON OF STABILITY PERFORMANCE BETWEEN CONCRETE PILE AND CLOSED END STEEL PIPE OF SHORT PILED RAFT FOUNDATION SYSTEM FOR REDUCING SETTLEMENT ON PEAT Sajiharjo Marto Suro, Agus Sulaeman and Ismail
More information