相似理论在水下爆炸冲击波载荷中的应用

以相似理论为基础,采用数值仿真试验的方法,探讨舰船结构遭受水下爆炸冲击波载荷作用时的动响应相似性问题。以某型舰原型作为基准模型,根据实际工程需要对舰船进行缩比仿真试验。原型有限元模型与缩比试验有限元模型数值结果表明:通过试验模型可以准确预测原型结构遭受水下爆炸冲击波时的动响应特性,将几何相似律应用到水下爆炸冲击波载荷相似性研究中是可行的。

Application of scaling laws in underwater explosion shock wave load

Based on the similarity theory, the law for similarity corresponding dynamic response of ship structure subjected to underwater explosion shock wave load is put forward through numerical tests in this paper. By using a ship prototype as the benchmark model, scaled model tests are conducted according to practical requirement of the project. The numerical test results of prototype FE model and scaled test FE model show that the dynamic response characteristics of the prototype suffered underwater explosion wave load can be accurately predicted through the model test,which proves that it is feasible to apply geometric similar law to underwater explosion shock wave load similarity.