The limit loads of circular arch pipelines for volume defects under combined loads

摘要：

This paper presents plastic limit loads of circular arch pipelines for volume defects under the internal pressure,in-plane and out-of-plane bending and torsion moment.The stress of the pipeline is analyzed by nonlinear finite element method.The geometric variables associated with volume defects (long axis,short axis and depth) and pipelines (diameter,wall thickness and bend radius) are systematically varied.The combination of the internal pressure,in-plane and out-plane bending and torsion moment is considered.The results show that the wall thickness,depth of defect and the direction of the defects have more effect on the limit loads.

关键词： Plastic limit loads Circular arch pipelines Volume defects Finite element method Combined loads

作者: Huimin Zhang

作者单位: Shanghai Institute of Technology,Shanghai 200235,China

会议类型: 国际会议

会议名称: 国际断裂力学2009年会

会议地点: 成都

会议语种:英文

页码: 463-468

在线出版日期: 2009-10-16（万方平台首次上网日期，不代表论文的发表时间）