JB 4732—1995中锥壳与圆筒连接加强段设计方法的改进  

Improvement of Design Method in JB 4732—1995 for Transition betweenConical Shell and Cylinder

作　　者：薛明德[1] 吴坚[1] 李世玉[2] Xue Mingde;Wu Jian;Li Shiyu(Tsinghua University,Beijing 100084,China;SINOPEC Engineering Inc.,Beijing 100101,China)

机构地区：[1]清华大学,北京100084 [2]中国石化工程建设公司,北京100101

出　　处：《化工设备与管道》2020年第4期1-10,共10页Process Equipment & Piping

摘　　要：为进一步适应工程实践的需要,对JB 4732—1995(2005年确认)中的无折边锥壳与圆筒连接加强段设计方法提出了改进建议。在设计方法的理论基础方面,提出以锥壳的精确解法取代简单边界效应解,以塑性极限压力准则取代弹性名义局部薄膜应力准则。根据所提出的设计方法,可将无折边锥壳加强段的适用范围扩大至α≤60°,0.001≤pc/KSm≤0.1,还可适用于短锥壳变径段。In this paper,the improvement for the design method in JB 4732—1995(Confirmed in 2005)for the transition between conical shell and cylinder was proposed so as to make it further adapt to engineering practice.With fundamental theory,the accurate solution for conical shell is used in replacement of simple boundary solution,and the plastic limit criterion is used in replacement of elastic local nominal membrane stress criterion.By using the design method presented,the applicable scope for conical shells can be extended to their apex angleα≤60°,0.001≤pc/KSm≤0.1.Moreover short conical shell can be also applicable.

关 键 词：锥壳 圆柱壳 变径段 分析设计 薄壳理论 塑性极限载荷 

分 类 号：TQ050.2[化学工程] TH121[机械工程—机械设计及理论]