摘要
为研究板架结构在水下爆炸载荷作用下的承载能力,采用数值方法计算空背固支方板在水下爆炸冲击波载荷作用下的动态响应,研究爆炸冲击因子对板的最终变形的影响,分析空背板材料应变率以及空气场压力变化对板的动态响应行为的影响,数值结果与试验结果基本一致,冲击因子越大,板中心的最终变形越大。结果表明,分析时必须考虑材料应变率的影响,但可不考虑空气场压力变化对板变形的影响。
In order to study the load bearing capacity of the grillage under underwater explosion, the dynamic response of the air-backed clamped square plate under the underwater explosion shock loading was analyzed numerically. The influence of shock factor on the final deformation of plate had been studied. Effect of strain rate and the changing of air pressure on the plate dynamic response behavior were discussed. The numerical results were basically consistent with the experimental results. The results indicated that the bigger the impact factor is, the bigger is the displacement of the plate center. So that the effects of strain rate must take into account, but may not consider the changing of air pressure influence.
出处
《船海工程》
2009年第5期50-53,共4页
Ship & Ocean Engineering
基金
国家自然科学基金委员会和中国工程物理研究院联合基金项目(10276013)
关键词
空背板
水下爆炸
动态响应
数值计算
air-backed plate
underwater explosion
dynamic response
numerical simulation
