The animate simulation for the coaxial collision of two elastic bars is performed onthe basis of the analyses for the stress waves.

在应力波分析的基础上，对两根弹性杆纵向共轴撞击过程进行了动画模拟。

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During simulation process, the program choose suitable numerical method: mid-point interpolation or Eulor, so the loose body moves sequent, according to collision, velocity and stress.

在实时模拟的计算过程中，根据游离体的碰撞情况、速度、当前受力的状态，选择中点插值法或欧拉法插值的数值计算方法，保证游离体的运动状态的连续性。

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Under severe environment situation or sudden accidents, i. e. out of control, some ship-bridge collision incidents are caused by mishandling due to psychological stress of pilots.

多数船撞桥事故都是在通航环境较差或船舶突然失控情况下，由于船舶驾引人员心理紧张导致误操作造成的。

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