刚塑性圆板受水下爆炸载荷时的动力响应

Dynamic response analysis of rigid-plastic circular plate under underwater blast loading

1.
State Key Laboratory of Vibration, Shock and Noise, Shanghai Jiaotong University, Shanghai 200040, China;
2.
Institute of Structural Mechanics, China Academy of Engineering Physics, Mianyang 621900, Sichuan, China;
3.
Naval Ship Research Center, Beijing 100085

摘要: 分析了简支刚塑性圆板受水下爆炸载荷时的塑性动力响应。考虑到流固耦合作用，应用Taylor平板理论求水下爆炸压力，用刚塑性法分析了圆板的永久变形场，引入膜力因子考虑了圆板大变形时的膜力效应。计算结果同用ABAQUS程序的计算结果进行了比较，表明不考虑空泡时所得结果较精确。最后考察了流固耦合作用及空泡对结构响应的影响。
- 固体力学 /
- 动力响应 /
- 水下爆炸 /
- 刚塑性圆板
Abstract: The dynamic response of simply supporting rigid-plastic circular plate is analyzed using the plastic limit method along with Taylor plate theory. Parameters including maximum residual deformation field are obtained and compared with the FEM results. It is shown that the method is feasible for small deformation and short duration of loading. The influence of fluid-structure interaction and cavatation is also discussed.
- solid mechanics /
- dynamic response /
- underwater explosion /
- rigid-plastic circular plate