应力波的一种，物体受到超过弹性极限(见材料的力学性能)的冲击应力扰动后产生的应力和应变的传播、反射的波动现象。在塑性波通过后，物体内会出现残余变形。
这些结果对于解决杆中弹塑性波传播问题是必需的。
These results are necessary for solving the problem of elastic-plastic wave propagation in a bar.
但这些研究多建立在弹性阶段分析的基础之上，对于弹塑性阶段的选波采用了与弹性阶段相同的特征周期。
But these researches all established on the stage of elasticity analysis, the same characteristic period of response spectrum was used for the stage of elastoplastic analysis.
考虑了弹塑性应力波传播对屈曲的影响，建立了该问题横向扰动方程。
The equation of lateral disturbance used to analyize the problem is developed by taking into account the effect of elastic-plastic stress wave.
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