同时也分析了冲头对圆管碰撞时，导致圆管由弹性变形向塑性变形转化学的临界速度值。
We also analyse the critical velocity, at which elastic deformation translate to plastic deformation when the bullet impact the tube.
在圆管与圆管的爆炸复合研究中，需要对管的动态参数做定量的估计。
In the research of explosive welding between tubes, it is necessary to evaluate quantitatively the parameters of the moving tube.
根据试验结果和建立的运动方程，获得阻力系数与圆管形状的关系，并计算了圆管所受到的拖曳力。
Based on the test results and movement equation established, the relationship between drag coefficient and tubular shape is obtained and the drag force imposed on pipe is calculated.
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