Seminar Z-club, Evry June Club Zébulon. Nikolay Osipov Group Val CDM MINES-PARISTECH June 16, 2011

Transcription

1 Club Zébulon Nikolay Osipov Group Val CDM MINES-PARISTECH June 16, 2011

2 Z-devels Group VALORISATION ARMINES 4(5) pers Commun projects Shared developments Commun code (projet svn). More than 1 Millon of lines of code NW Numerics, Inc, USA 1 pers Group Numerical mechanics ONERA 6 pers

3 Z-community Group VALORISATION ARMINES 4(5) pers Centre des Matériaux NW Numerics, Inc, USA 1 pers ENSMP Research groups LMT Commun projects Shared developments Commun code (projet svn). More than 1 Millon of lines of code Research groups Mines Saint-Etienne Research groups ONERA Group Numerical mechanics ONERA 6 pers

4 Z-world SIMAP INP Grenoble Group VALORISATION ARMINES 4(5) pers Centre des Matériaux LMS ENSMP NW Numerics, Inc, USA 1 pers... Research groups LMT Penn State Research groups Mines Saint-Etienne SPbSTU Russia Université de Bourgogne Universität Leoben EDF ENS-Géologie Research groups ONERA Group Numerical mechanics ONERA 6 pers MIT INSA-Rouen EPFL Tortuetec

5 Z-set existing customer base Z-set products have been on the market for 10 years and has continuously grown in scope Almost exclusively Enterprise class CAE departments mostly ABAQUS users Generally each client has 1-2 power users many others in general application use Experience shows deployment to a wide scale is feasible for general CAE use In almost all cases Transvalor or NW Numerics provide a high level of customization

6 Z-set - industrial software Calibration of a visco-plastic behavior and fatigue life criterion to apply in calculation of an exhaust manifold component

7 Introduction M4828 Austenitic steel temperature fields resulting from a thermal shock cycle comprising: acceleration - full throttle - deceleration measured nodal temperatures

8 Experimental database

9 Experimental database

10 Experimental database

11 Experimental database

12 stress Experimental database time Plastic strain Time dependent plasticity Stress relaxation due to viscous effects (very pronounced at high temperature) Temperatures: 20 C, 250 C, 550 C, 650 C and at 750 C.

13 Classical life cycle estimation toolchain Matl model Thermo-Mechanical FEM Analysis Fatigue Model Life cycle computation

14 Classical life cycle estimation toolchain Matl model Thermo-Mechanical FEM Analysis Fatigue Model Life cycle computation insufficiency of the matl. models developed in commercial software packages difficulties of integration

15 Z-set life cycle estimation toolchain Matl model Thermo-Mechanical FEM Analysis Elasto-visco-plastic matl. model elasticity plasticity criterion flow rule hardenings... Parameters fitting. GUI ZsimOpt Fatigue Model Life cycle computation

16 Z-set life cycle estimation toolchain Matl model Thermo-Mechanical FEM Analysis Fatigue Model Elasto-visco-plastic matl. Z-mat interface to Abaqus model elasticity cyclic loading plasticity stress-strain analysis criterion plastic deformation flow rule creep hardenings... Parameters fitting. GUI ZsimOpt Life cycle computation

17 Z-set life cycle estimation toolchain Matl model Thermo-Mechanical FEM Analysis Fatigue Model Life cycle computation Elasto-visco-plastic matl. Z-mat interface to Abaqus Damage evaluation at high model temperatures elasticity cyclic loading fatigue damage plasticity stress-strain analysis creep damage criterion plastic deformation creep/fatigue interaction... flow rule creep Parameters fitting. hardenings GUI ZsimOpt... Parameters fitting. GUI ZsimOpt

18 Z-set life cycle estimation toolchain Matl model Thermo-Mechanical FEM Analysis Fatigue Model Life cycle computation Elasto-visco-plastic matl. Z-mat interface to Abaqus Z-post interface to Aba Damage evaluation at high model temperatures elasticity cyclic loading damage evaluation fatigue damage plasticity stress-strain analysis life cycle estimation creep damage criterion plastic deformation creep/fatigue interaction... flow rule creep Parameters fitting. hardenings GUI ZsimOpt... Parameters fitting. GUI ZsimOpt

19 Couple of words about Z-mat Elasticity, hyperelasticity Plasticity, viscoplasticity Linear or non-linear isotropic and kinematic hardening Crystal plasticity Ductile models Visco-elasticity Multi-mat User extensible Z-mat object-oriented design Ela sti cit y Kinematic h ardening Th er m al st ra in Many models Isotropic hardenin g Flow ial Potent Kin Crit em erio ati ch n ard en Behavior ing Models for industrial applications Aeronautics Car manufacturers Automotive equipment suppliers Energy Metals manufacturers Polymer, Rubber, Glass industry

20 Typical assembly for viscoplasticity Behavior Elasticity Thermal strain Potential Criterion Flow Isotropic hardening Kinematic hardening Kinematic hardening

21 Z-mat à la carte

22 Calibration strategy and matl file

23 ZsimOpt interface. Experimental database load experimental curves data manipulation filtering smoothing

24 ZsimOpt interface. Optimization optimisation project management templates management simulations and variables control choice of optimisation strategy instrumentation panel

25 Isothermal optimization. T=650 C 750 C

26 Anisothermal optimization plotting analysis optimization

27 FE computations

28 Z-mat - External FE codes interfaces MARC SAMCEF

29 FE Results. Native viewer Von Mises stress isocontour plots (engine shutdown)

30 FE Results. Native viewer Accumulated plastic strain at the end of the 4th cycle

31 Post-processing Principles of Z-post Example of Life cycle estimation postprocessing

32 Principles of Z-post. Data manipulation DATA DATA READER PROCESSES PROCESSES PROCESSES DATA WRITER Selection of zones (nodes, Gauss points, elements, increments) User functions or scripts Graphical post-processing Available interfaces Abaqus Ansys LS-DYNA ****post_processing ***data_source odb **open results.odb ***local_post_processing **file integ **output_number 1-10 **elset nickel **process trace sig ***global_post_processing **process average_in_element sigii ***local_post_processing **process function msig11 sig11+(1./3.)(ave_sigii - sigii); ***global_post_processing **process node_extrapolation *list_var msig11 ***data_output odb *file results_abaqus.odb ****return

33 Z-post. Available features Post- global Post- local Averaging (around, in element, in elset ) Weibull, Beremin, Batdorf Selective int Copy min, max... user extensions Generic: fmin, fmax and min, max (temporary) Norm, Function, Format, Triaxiality Eigen... Invariants: Mises, Trace, Deviator,... Durability analisys: Creep HCF : sines, crossland, dang-van LCF : senitoglu, onera, manson-coffin, swt TMF : cumulation (non-linear) Rainflow multiaxial Range multiaxial Ductile fracture... user extensions

34 Fatigue life estimation. Experimental database

35 Fatigue life model calibration

36 ZsimOpt Interface. Multiplot

37 Fatigue life computation

38 Conclusions Matl model Thermo-Mechanical FEM Analysis Fatigue Model Life cycle computation elasticity cyclic loading models and tools for Z-set provides powerful Elasto-visco-plastic matl. Z-mat interface to Abaqus Z-post interface to Aba Damage evaluation at high fatigue damage model simulation plasticity of strongly non-linear material stress-strain analysis temperatures damage evaluation creep damage phenomena criterion plastic deformation life cycle estimation User friendly graphical interfaces for successful creep/fatigue interaction... flow rule creep simulation and optimization Parameter's fitting. hardenings GUI ZsimOpt... Easy interfacing and integration within existing industrial software suites Parameter's fitting. GUI ZsimOpt