The change of stress field during the impact process was studied by transient analysis.
模拟采用瞬态分析方法，跟踪了在整个冲击过程中应力场的变化。
The contact force during impact process was measured by force sensor and data signal processing system in real time.
冲击过程中的接触载荷由压力传感器及数字信号处理系统实时测量。
The meaning and function of restitution coefficient were introduced, and some kinds of impact process models were analyzed.
论述了恢复系数的含义及作用，并在此基础上介绍了几种碰撞过程模型。
The meaning and function of restitution coefficient were introduced, and some kinds of impact process models were analyzed.
论述了恢复系数的含义及作用，并在此基础上介绍了几种碰撞过程模型。
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