水下物体非接触爆炸损伤过程的数值计算

Numerical Calculation of Object Damage by Non-contact Explosion underWater

为了研究水下物体在非接触爆炸作用下的损伤过程,基于声-固耦合建立起水下物体在非接触爆炸作用下的有限元模型,在物体上设置3个测点,对测点随时间变化的位移和速度进行计算。结果表明,水下非接触爆炸主要影响物体沿炸药到物体垂线方向的运动,而对整个物体变形的影响不大。

A finite element model based on sound-solid coupling technique is established to study the damage of objects caused by non-conduct explosion under water.The time-dependent displacement and speed of three points on an object are calculated.The result shows that underwater explosion effects the movement of an object in the direction vertical to the line from the explosive to the object and has little effect on the deformation of the whole object.