内压作用下局部减薄管道的极限载荷分析  

Limit Load Analysis for Local Wall-Thinning Pipline under Internal Pressure

作　　者：韩良浩[1] 柳曾典[2] 

机构地区：[1]清华大学 [2]华东理工大学

出　　处：《压力容器》1998年第4期1-4,48,共5页Pressure Vessel Technology

摘　　要：本文通过三维有限元求解了局部减薄管道的极限载荷，并与ASMEB31．G规范进行了比较。重点研究了局部减薄宽度对管道极限承载能力的影响，结果表明局部减薄宽度的影响不能忽略，在减薄宽度较大的情况下，ASMEB31.G可能会给出偏于危险的评定。The limit loads for local wall-thinning pipeline were obtained by 3D FEA (Three Dimensional Finite Element Analysis), and the results were compared with ASME B31. G Code to evaluate remaining strength of pipeline. The research emphasis was put on the influence of defect width to limit load-carrying capability of pipeling, it was shown that the effect of defect width could not be neglected. For pipeline with larger width in the thin area,ASME B31. G would probaly give non-conservative evaluation.

关 键 词：极限载荷 局部减薄 管道 极限载荷 

分 类 号：U173.1[交通运输工程]