文献类型：会议论文

英文题名：The collapse load of circular arch pipe with 3D defects

作者：Zhang, Huimin[1];Pan, Jiazhen[1]

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

会议论文集：9th International Conference on Engineering Structural Integrity Assessment

会议日期：OCT 15-19, 2007

会议地点：Beijing Univ Aeronaut & Astronaut, Beijing, PEOPLES R CHINA

主办单位：Beijing Univ Aeronaut & Astronaut

语种：英文

摘要：The paper examines the nonlinear elastic-plastic response of internally pressurized circular arch pipeline. The pipe has different shape, direction and size of 3D defects. The collapse load is calculated by nonlinear finite element method. The paper also presents a parametric study, aimed at investigating the effects of defect depth-to-thickness, defect length-to-width and radius of curvature. The collapse loads of circular arch pipe are compared with that of straight pipe. The numerical results and failure mode are validated by burst tests. The result shows that the axial defects have more influence on the collapse load.