Load Bearing Capacity and Safety Analysis for Strain-hardening Austenitic Stainless Steel Pressure Vessels

作     者：CHEN Gang DENG Yangchun 

作者机构：China Special Equipment Safety Supervision Administration General Administration of Quality Supervision and Inspection and Quarantine of the People＇s Republic of China Beijing 100088 China Hubei Provincial Special Equipment Safety Inspection and Research Institute Wuhan 430077 China 

出 版 物：《Chinese Journal of Mechanical Engineering》 (中国机械工程学报（英文版）)

年 卷 期：2011年第24卷第2期

页      面：179-186页

核心收录：

学科分类：080704[工学-流体机械及工程] 08[工学] 0807[工学-动力工程及工程热物理] 080502[工学-材料学] 0805[工学-材料科学与工程（可授工学、理学学位）] 

基　　金：supported by National Key Technology R&D Program of China under the 11th Five-year(Grant No.2006BAK02B02) and China Special Equipment Science & Technology Cooperation Platform 

主　　题：pressure vessel austenitic stainless steel strain hardening load bearing capacity safety margin 

摘      要：By increasing the yield strengths of austenitic stainless steels for pressure vessels with strain hardening techniques,the elastic load bearing capacity of austenitic stainless steel pressure vessels can be significantly *** kinds of strain hardening methods are often used for austenitic stainless steel pressure vessels：Avesta model for ambient temperature applications and Ardeform model for cryogenic temperature *** methods are obtained from conventional design rules based on the linear elastic theory,and only consider the hardening effect from *** this limits the applications of strain hardening techniques for austenitic stainless steel pressure vessels because of safety *** paper investigates the effect of strain hardening on the load bearing capacity of austenitic stainless steel pressure vessels under large deformation,based on the elastic-plastic ***,to understand the effect of strain hardening on material behavior,the plastic instability loads of a round tensile bar specimen are derived under two different loading paths and validated by ***,to investigate the effect of strain hardening on pressure vessels strength, the plastic instability pressure under strain hardening is derived and further validated by finite element ***,the safety margin of pressure vessels after strain hardening is analyzed by comparing the safety factor values calculated from bursting tests,finite element analyses,and *** researching results show that the load bearing capacity of pressure vessels at ambient temperature is independent of the loading history when the effects of both material strain hardening and structural deformation are *** element simulations and bursting tests results show that the minimum safety factor of austenitic stainless steel pressure vessels with 5% strain hardening is close to the recommended value for common pressure vessels specified in th