The article has applied the weighted residual method and laplace changing to analyze the plastic dynamic response of a simple circular plate , the influence of elastic foundation on it and drives its residual deflection and the terminal time 摘要应用加权残值法和拉普拉斯变换,分析弹性基础上简支圆板的塑性动力响应问题,弹性基础对薄板塑性动力响应的影响,并且给出板的残余挠度和终止运动时间。