科研之友
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摘要
A numerical limit analysis is performed for cylindrical shells with part-through slots using a general computational method for limit analysis of 3-D structures. The upper bounds for the limit pressures are given for a comprehensive range of geometric parameters. Some of the calculated results are compared with the results of detailed 3-D elastoplastic finite element analysis and where possible, with existing theoretical, experimental or numerical solutions. The effect of various shapes and sizes of part-through slots on the load-carrying capacity of cylindrical shells is investigated and evaluated. Two kinds of typical failure modes corresponding to different dimensions of slots are studied. Based on the numerical results, a geometric parameter G which combines the slot dimensions and the cylinder geometry is presented, It reflects reasonably the overall effect of slot on the limit load of a cylinder. An empirical formula for estimating the limit pressure of a cylindrical shell with part-through slot is obtained.
- 出版日期1995
- 单位清华大学
