爆炸与冲击2012，Vol.32Issue(6)：585-591,7.
水下爆炸载荷作用下环肋加筋圆柱壳结构的弹塑性动力屈曲
Dynamic bulking of a ring-stiffened cylindrical shell subjected to underwater explosive loading
袁建红 1朱锡 1张振华1
作者信息
- 1. 海军工程大学船舶与动力学院,湖北武汉430033
- 折叠
摘要
Abstract
In order to investigate the elastic-plastic bulking of a submarine, an existent simplified model for a submarine, namely the ring-stiffened cylindrical shell, was chosen as the simulation object, and a fluid-solid coupling model was built by using the nonlinear, explicit transient dynamic code, MSC. Dytran to explore the elastic-plastic bulking of the ring-stiffened cylindrical shell subjected to underwater explosion load. The critical dynamic bulking load was obtained by using the Budiansky-Roth rule and the Southwell method. And the following factors were discussed: load intensity, mesh density, radius-to-thickness ratio, length-to-radius ratio, rib spacing and rib size which influencing the dynamic buckling mode and the critical buckling load of the ring-stiffened cylindrical shell subjected to underwater explosive loading. The simulated results show that the built fluid-solid coupling model can be used to simulate the dynamic bulking of the ring-stiffened cylindrical shell by combining MSC. Dytran. And the model mesh size and the structural parameters have a certain influence on the critical dynamic buckling load, in which the radius-to-thickness ratio has more obvious influence.关键词
爆炸力学/弹塑性动屈曲/水下爆炸/加筋圆柱壳Key words
mechanics of explosion/ dynamic bulking/ underwater explosion/ cylindrical shell分类
数理科学引用本文复制引用
袁建红,朱锡,张振华..水下爆炸载荷作用下环肋加筋圆柱壳结构的弹塑性动力屈曲[J].爆炸与冲击,2012,32(6):585-591,7.
