工程设计学报2019，Vol.26Issue(1)：1-7,28,8.DOI:10.3785/j.issn.1006-754X.2019.01.001
内压椭圆形封头设计方法比较研究
Comparison of design methods for internally pressurized ellipsoidal head
摘要
Abstract
As a critical component of pressure equipment, ellipsoidal head is widely used in the fields of petrochemical industry and nuclear plant.The design of ellipsoidal head is so important to guarantee the safety and economy of the pressure equipment.Based on the Chinese standards GB/T 150 and JB 4732, ASME BPVC Section Ⅲ.division 1-Subsection NE, Code Case N-284, SectionⅧ division 1 and division 2, and the European Standard EN 13445, the design methods for internally pressurized ellipsoidal head were discussed and compared in detail.ASME Codes and EN 13445 adopt the design methods based on various failure modes of internally pressurized ellipsoidal head.However, the Chinese standards GB/T 150 and JB 4732 adopt the strength design methods based on maximum stress and limit pressure, respectively.The design equation for preventing local buckling failure was not presented in the Chinese standards, which was disadvantageous for the design of large-scale thin-walled ellipsoidal head.The design results of JB 4732 were too conservative, which was not economical.Moreover, it concluded that there was a defect in these design methods that the effect of both strain hardening and large deflection was ignored.Therefore, it will be a good suggestion to improve the design methods of internally pressurized ellipsoidal head for Chinese standards.关键词
内压椭圆形封头/设计方法/规范标准/失效模式Key words
internally pressurized ellipsoidal head/design method/code and standard/failure mode分类
机械制造引用本文复制引用
李克明,彭文珠,张泽坤,顾超华,徐平..内压椭圆形封头设计方法比较研究[J].工程设计学报,2019,26(1):1-7,28,8.基金项目
国家重点研发计划资助项目 (2016YFC0801501) （2016YFC0801501）
