【摘要】 对复杂载荷作用下圆柱壳的弹塑性动力屈曲问题进行了研究。基于Hamilton变分原理导出圆柱壳的运动方程 ,本构关系采用增量理论 ,借助增量数值算法求解动力方程组。结果表明 ,均匀径向外压对圆柱壳的轴向冲击的过程或冲击性态有较大的影响 ,并讨论了径向压力与轴向冲击载荷的幅值对结构临界动力屈曲载荷和临界动力失效载荷的影响。更多还原

【Abstract】 The elastic plastic dynamic buckling of cylindrical shells under combined loading is discussed. The basic equations of structure are derived from Hamilton variational principle and the constitution of material utilizes the increment theory. The increment numerical method is used to solve the kinetic equations. The results exhibit that radial external pressure plat an important role on the shape and property of the cylinder under axial loading. The effects of value of radial external pressure and value of axial loading to the dynamic buckling behavior of cylinder are discussed.更多还原