Plastic collapse analysis of defective pipelines under multi-loading systems

被引：26
|
作者：
Liu, YH [1 ]
Cen, ZZ [1 ]
Chen, HF [1 ]
Xu, BY [1 ]
机构：
[1] Tsing Hua Univ, Dept Engn Mech, Beijing 100084, Peoples R China
来源：
INTERNATIONAL JOURNAL OF MECHANICAL SCIENCES | 2000年 / 42卷 / 08期
关键词：
collapse analysis; loading path; mathematical programming; pipeline; defect;
D O I：
10.1016/S0020-7403(99)00093-4
中图分类号：
TH [机械、仪表工业];
学科分类号：
0802 ;
摘要：
In this paper, a finite element mathematical programming formulation is presented for the kinematic limit analysis of 3-D rigid-perfectly plastic bodies. A numerical path scheme for radial loading is adopted to deal with complex multi-loading systems. A direct iterative algorithm is employed in solving the above optimization formulation. The numerical procedure has been applied to carry out the plastic collapse analysis of defective pipelines under multi-loading systems. The engineering situation considered has a practical importance in the pipeline industry. The effects of four kinds of typical part-through slots on the collapse loads of pipelines are investigated and evaluated. Some typical failure modes corresponding to different configurations of slots and loading forms are studied. (C) 2000 Published by Elsevier Science Ltd. All rights reserved.
引用
收藏
页码：1607 / 1622
页数：16
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