文献类型：会议论文

英文题名：Load interaction of welded piping branch junctions subjected to combined internal pressure and bending

作者：Xuan, FZ; Li, PN; Tu, ST

机构：[1]E China Univ Sci & Technol, Sch Mech Engn, Shanghai 200237, Peoples R China

会议论文集：Asian Pacific Conference on Fracture and Strength

会议日期：OCT 06-08, 2004

会议地点：Cheju Isl, SOUTH KOREA

语种：英文

外文关键词：piping branch junction; limit load; internal pressure; bending; finite element analysis

摘要：Systematic detailed non-linear finite element (FE) analysis are described for limit load interaction of piping branch junctions subjected to internal pressure and bending. The results show that for the tees with a small diameter ratio, the limit load interaction closes to the linear expression; as diameter ratio d/D increasing, the interaction relationship tends to parabolic equation; for the piping branch junction with diameter ratio equaling to unit, the limit load combinations is approximately quadratic. Compared to the individual limit bending value, internal pressure slightly increases the bending capability as it is in the range of 0.2 <= P/P-L<= 0.4, especially for the cases of the main pipe with thinner wall. A closed limit load solution is obtained from the FE results through accommodating the geometrical parameter influence, and validated by using experimental results.