Working together for a safer world RulesCalc 2017
Contents 1. Introduction 1 2. Product information 1 3. System requirements 1 4. Training and Support information 1 5. What s new in RulesCalc 2017.0.0.4 2 6. Resolved Issues 2 7. Known limitations 4 i
1. Introduction This document gives an indication to the users about system requirements and new functionalities and enhancements that are implemented in RulesCalc Software. Details about the implementation of all functionalities are not covered in this document. More details and information can be found in the user guide and getting started guide which are available in the installation directory. For details about rule implementations in the programs, the user should consult the user guide and support desk for information about how to use the program for specific ship structures. 2. Product information Information on Lloyd s Register Marine software products can be obtained from http://www.lr.org/en/marine/software/. 3. System requirements RulesCalc software requires the following hardware and software configurations: Hardware 3GB RAM, or greater. 24 Display strongly recommended. Intel Core processor or equivalent. Software Microsoft Windows versions: XP SP2 and later (32-bit only) Vista (32-bit only) 7 (32-bit and 64-bit) 4. Training and Support information To for training information or for support or to report an error, please contact our engineering software support team at es.support@lr.org 1
5. What s new in RulesCalc 2017.0.0.4 RulesCalc 2017.0 software is a product for calculation of Class requirements to the Rules and Regulations for the Classification of Ships. The following items describe major features and changes to the application: 1. Implementation of URS11A RulesCalc now implements the calculations for the CSR URS11A requirements. The calculations have been merged with existing RulesCalc calculations where applicable 2. Implementation of Shear Flow A new tool for calculation the shear stress distribution in a transverse section due to vertical bending. 3. Ship Torsion RulesCalc now implements the calculations for ship torsion 4. Rules update RulesCalc 2017.0 has been updated for the July 2017 issue of the Rules and Regulations for the Classification of Ships. Please note that all rule references in this document pertain to the Lloyd s Register Rules and Regulations for the Classification of Ships unless otherwise noted. 5. Ultimate Strength Assessment Calculations in Ultimate Strength Assessment have been update as per A review and study on ultimate strength of steel plates and stiffened panels in axial compression, Shengming Zhang, Ships and Offshore Structures Vol. 11, Iss. 1, 2016 6. Resolved Issues Ref no: Details 36264 Correction for Hrm for passenger ships aft end (Location : Local scantlings/aft structures). 35869 Dissable Machinery branch 35277 Updating graphics to use consistent units when displaying transverse views 35268 Fix for upper and lower extent of higher tensile steel in bottom and deck region. 35267 Required Material for strakes is incorrectly highlighted in red if a better grade material is selected. Bilge longitudinals to be assessed as side shell longs or as bilge longs depending on required double 35266 bottom height. Bilge plating to be assessed as side shell or as bilge depending on the location with respect to inner 35264 bottom. 35261 Remove warning "Damage waterline must be input for complete assessment". 35173 35160 Sheer strake plating additional requirements and incorrect kl in case of higher tensile steel of strength 390. Watertight head h4 not correctly calculated. Error in section modulus calculation at Hatch Coaming. Bottom and bilge plating additional requirement. Fixed keel plating breadth requirement. Fixed Side shell plating additional requirement. 2
Fixed Local Scantlings - Deep Tank and Watertight bulkheads calculations of plating, secondary and primary stiffening. Parenthesis missing in formula for Pt3 Ch8 Sec 2.1.1.b. Incorrect formula for C_w_min Pt 4 Ch2 Sec 4.2 35115 Correction for cargo deck where fork lift are used. Addressed the stiffener spacing issue. It now uses the spacing between the actual stiffeners rather 34974 than the width of the strake. 34474 Fix in compartment contents when wizard is used to create a midship section 34465 Pt4Ch1Table1.5.3 Note 4: kl maybe taken as 1 outside high tensile region. 34453 Incorrect thickness calculation for side shell (trans framing). Required section modulus for transverse shell framing (keel, bottom, bilge, side shell) is being calculated based on Pt4 Ch 1 Table 1.6.1, which is for longitudinals. Table 1.6.3 to apply instead. When panel framing is set to "Transverse" the stiffeners should not be included in section property 34361 calculation of the hull section. Disable the following grid items in "Stiffener Groups" tab when framing = "transverse". 1. Corrected critical buckling stress 34321 2. Corrected design stress 34193 Incorrect thickness calculation for side shell (trans framing) The deck location enum value "weather exposed superstructure decks" is not valid for a main deck. 33738 Disable this enum value for main deck 33736 Incorrect calculation of required thickness for main deck 33587 Corrected Side shell requirements for passenger ferry 33560 A new grid was created to show alpha_p value and is over-writable 33549 VI10419 Fixed ref error when calculating Stem Required thickness. 33434 Corrected calculation of Le in Tables 5.4.1 Pt3 Ch5 and 6.4.1 Pt3 Ch6 33424 Enabled table 5.5.2 Pt3 Ch5 for double bottom in the fore region 33362 Corrected calculation for the head h4 is for deep tank outside of midship region 33115 Corrected load shortening curve for LR20202 33062 Corrected shear stress calculation in strake 33043 Fixed application crash 33021 Corrected plastic section modulus for bulb profiles 32974 Fixed K1 value incorrectly calculated in for cargo deck panel 32904 K1 factor correction for the case where a panel is at same time bottom and crown of tank 32098 Corrected required modulus for bow flare slamming 31727 Fixed application crash in Local Scantlings DeckBeamsnLong 31460 Enabled shell envelope framing for ferries and passenger ships 31319 Correction for the MWO value displayed in intermediate calcs 31285 Correction for the worst case reduction factor in Hull Bending Strength branch 31248 Correction for the load utilisation factor 31169 correcting the sign for sagging BM Corrected the design bending moment, load utilisation factor and VWBM values in Ultimate 31132 Strength Assessment 31080 Correction for the Kl value for calculation of the effective section modulus at main deck and keel Implementation of Note 3 in Pt3,Ch2,Sec1,Table2.1.1. Interpolation point corrected as 0.66 instead 31078 of 0.68. 30849 Correction for Design Wave Shear Force for 0.6L-0.7L and 0.85L-1.0L 3
30812 Fixing Issue with Still Water Shear Force missing Rule 2011 Notice 8 30621 Adding function declaration related to KL fix KL correction (a kl factor of 0,66 may be applied to steel with a specified minimum yield stress of 30604 390 N/mm2 for deck and hatch coamings when plate or web thickness is greater than 50 mm) 30599 Using ht2 in place of ht3 in calculating Z fir Part 4, Chapter 1, Table 1.6.1 30309 fix for crash when deleting coaming 30292 Correction for KL factor in Container Ships 7. Known limitations 1. Transverse sections branch The transverse sections branch is not validated for regions outside of the mid-ship and may provide incorrect results. 2. Transverse stiffeners Transverse stiffeners implementations are incomplete and may provide incorrect results. 3. kl value used for calculating the extends of high tensile steel region kl used in transverse sections for calculating the higher and lower extents of high tensile steel region for materials with yield strength 390N/mm2 and 460N/mm2 are 0.68 and 0.62 respectively, irrespective of the plate thickness. 4
Rules and Procedures Software Global Technology Centre, Southampton Boldrewood Innovation Campus, Building 175, Burgess Road, Southampton, SO16 7QF, UK E es.support@lr.org www.lr.org Lloyd s Register Group Limited, its affiliates and subsidiaries and their respective officers, employees or agents are individually and collectively, referred to in this clause as Lloyd s Register. Lloyd s Register assumes no responsibility and shall not be liable to any person for any loss, damage or expense caused by reliance on the information or advice in this document or howsoever provided, unless that person has signed a contract with the relevant Lloyd s Register entity for the provision of this information or advice and in that case any responsibility or liability is exclusively on the terms and conditions set out in that contract. Lloyd s Register and variants of it are trading names of Lloyd s Register Group Limited, its subsidiaries and affiliates. Copyright Lloyd s Register Group Limited 2017. A member of the Lloyd s Register group.