ABS 140 NOTICE 2-2015 GUIDE FOR SAFEHULL-DYNAMIC LOADING APPROACH FOR VESSELS.pdf

1、GUIDE FOR SAFEHULL-DYNAMIC LOADING APPROACH FOR VESSELS DECEMBER 2006 NOTICE NO. 2 October 2015 The following Rule Changes were approved by the ABS Rules Committee on 18 September 2015 and become EFFECTIVE AS OF 1 OCTOBER 2015. (See http:/www.eagle.org for the consolidated version of the Guide for S

2、afeHull-Dynamic Loading Approach for Vessels, 2006, with all Notices and Corrigenda incorporated.) Notes - The date in the parentheses means the date that the Rule becomes effective for new construction based on the contract date for construction. (See 1-1-4/3.3 of the ABS Rules for Conditions of Cl

3、assification (Part 1).) APPENDIX 2 BUCKLING AND ULTIMATE STRENGTH CRITERIA 9 Deep Girders and Webs 9.1 Buckling Criteria (Revise Subparagraph A2/9.1.1, as follows.) 9.1.1 Web Plate (1 October 2015) (fL /fcL)2+ (fb /fcb)2+ (fLT /fcLT)2 Smwhere fL= calculated uniform compressive stress along the lengt

4、h of the girder, in N/cm2(kgf/cm2, lbf/in2). fb= calculated ideal bending stress, in N/cm2(kgf/cm2, lbf/in2). fLT= calculated total shear stress, including hull girder and local loads where applicable, in N/cm2(kgf/cm2, lbf/in2). fL, fband fLTare to be calculated for the panel in question under each

5、 load case. fL, fband fLTmay be calculated by the relative displacement of four corner nodes of the panel. Care is to be taken where one corner of the panel is located in a high stress concentration area; because stresses calculated by the displacement method tend to be conservative. fL, fband fLTma

6、y also be directly calculated from the component stresses of the elements in the panel, provided sufficient number of elements exists to represent stress distributions in the panel. fcL, fcband fcLTare critical buckling stresses with respect to uniform compression, ideal bending and shear, respectively, and may be determined in accordance with 5C-5-A2 of the Steel Vessel Rules. Smis as defined in A2/3.5. In the determination of fcLand fcLT, the effects of openings are to be appropriately considered. ABSGUIDE FOR SAFEHULL-DYNAMIC LOADING APPROACH FOR VESSELS .2006 1