Abstract
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.
| Original language | English |
|---|---|
| Pages (from-to) | 1607-1622 |
| Number of pages | 16 |
| Journal | International Journal of Mechanical Sciences |
| Volume | 42 |
| Issue number | 8 |
| DOIs | |
| Publication status | Published - 2000 |
Keywords
- collapse analysis
- pipelines
- loading path
- mathematical programming