冲击载荷作用下的结构动态响应

Structural Dynamic Response under Impact Load

通过圆板在短时强载荷作用下的动态响应分析,用一定的理论分析方法及数值计算来更方便有效的解决工程领域中常遇到的实际问题.根据简支圆板在冲击荷载作用下的动态响应控制方程,通过载荷的等效替换,建立冲击载荷作用下简支圆板的动态响应分析数学模型.考虑一定的边界条件,采用数值计算方法进行数值模拟分析,观察结构上某些关键点的动态响应结果.通过与圆板发生大变形的承载能力对动载情形的最大挠度进行近似估计对比,最终计算结果表明,在不同外部激励作用下,这种计算方法能够满足工程设计要求并有利于工程实际,能对材料安全设计发挥了重要作用.

Based on the dynamic response control equation of the simply supported circular plate under impact load and the equivalent replacement of the load, the impact response analysis model of the simply supported circular plate under impact load was established. The boundary conditions were considered and the numerical calculation method was adopted to analyze the numerical simulation and observe the dynamic response of key points. The results show that this calculation method can meet the design requirements, facilitate the practical engineering and play an important role in elaborating the strength of material.