速度阶跃法计算冲击响应幅值的误差原因和适用条件研究

当冲击力作用时间远小于隔离系统的固有周期时，我们通常把冲击运动理想化为速度阶跃，由于这种处理方法大大简化了冲击响应的分析和计算，因此被广泛地用于冲击响应幅值和冲击谱的计算中，而实际上对于有阻尼系统原有的适用条件是不充分的。长期以来速度阶跃法存在严重的误用。本文通过对使用速度阶跃法计算冲击响应幅值的误差原因的研究，提出了速度阶跃法完整的适用条件。

Study on Error Source and Applicable Conditons of Velocity Step Technique for Estimating Shock Response Amplitude

Shock motion is often simplified as a step function of velocity versus time when its acting duration of a shock is far smaller than the natural period of a shock isolation system.This technique makes analysis and calculation of shock response easier.So it is broadly used in estimation of shock response amplitude and shock spectrum.But its old applicable conditions are not sufficient actually when this technique is used in a damped shock isolation system.So it is(abused) for a long time.Study on its error source and applicable conditions is put forwarded here.