| 爆炸载荷作用下双向加筋方板的大挠度塑性动力响应 |
| |
| 引用本文： | 刘尧,刘敬喜,李天匀.爆炸载荷作用下双向加筋方板的大挠度塑性动力响应[J].工程力学,2012(1):64-69. |
| |
| 作者姓名： | 刘尧 刘敬喜 李天匀 |
| |
| 作者单位： | 华中科技大学船舶与海洋工程学院 |
| |
| 基金项目： | 国家自然科学基金项目(46906058);中央高校基本科研业务费专项资金项目(Q200903) |
| |
| 摘 要： | 从分别列出加筋板面板以及加强筋的运动方程出发,分析了爆炸载荷作用下双向加筋固支方板的大挠度塑性动力响应。分析表明:取决于加强筋的相对刚度以及爆炸载荷峰值的大小,加筋板的运动将呈现3种不同的模式。该文限于讨论加筋板的总体变形模式,具体讨论了十字加筋以及双十字加筋固支方板在忽略弯矩影响下的薄膜解法。理论结果与已有的试验结果在多数情况下符合良好,表明该文提出的简化理论分析方法能对爆炸载荷下双向加筋方板的永久变形做出较为合理的预报。
|
| 关 键 词： | 加筋板 爆炸载荷 破坏模式 大变形 塑性动力响应 |
THE PLASTIC DYNAMIC RESPONSE OF TWO WAY STIFFENED SQUARE PLATES WITH LARGE DEFLECTION SUBJECTED TO BLAST LOADS |
| |
| LIU Yao,LIU Jing-xi,LI Tian-yun.THE PLASTIC DYNAMIC RESPONSE OF TWO WAY STIFFENED SQUARE PLATES WITH LARGE DEFLECTION SUBJECTED TO BLAST LOADS[J].Engineering Mechanics,2012(1):64-69. |
| |
| Authors: | LIU Yao LIU Jing-xi LI Tian-yun |
| |
| Affiliation: | (College of Naval Architecture and Ocean Engineering,Huazhong University of Science and Technology,Wuhan,Hubei 430074,China) |
| |
| Abstract: | The plastic dynamic response of built-in square plates with two way stiffeners under blast loading is discussed based on motion equations of both panels and stiffeners herein.The analysis indicates that the stiffened plate has three modes depending on the relative rigidity of the stiffeners and the peak of the load applied.In this paper,the global deflection mode was discussed only.The membrane solution for the built-in square plates with two way stiffeners(cross stiffeners and double cross stiffeners) was obtained by neglecting the influence of bending moment.The results were verified by the existing experiment results.It is shown that the present simplified analytical method can predict the permanent transverse deflection of the two way stiffened square plates subjected to blast loads with a reasonable accuracy. |
| |
| Keywords: | stiffened plates blast loads failure mode large deflection dynamic plastic response |
| 本文献已被 CNKI 等数据库收录！ |
