冲击内压作用下厚壁圆筒弹性动力分析

采用动态线性与非线性有限元分析软件对厚壁圆筒进行弹性动力分析,得到了厚壁圆筒在冲击内压作用下圆筒壁特别是内壁处的应力、位移、速度随时间的变化规律,求解结果和解析解吻合,说明力学模型的建立是可行的,计算结果是可信的,为厚壁圆筒在冲击内压作用下弹性阶段的设计计算提供了依据,并为厚壁圆筒在爆轰载荷的作用下弹塑性分析计算打下了基础。

ELASTIC DYNAMIC ANALYSIS OF THICK WALL CYLINDER UNDER IMPACT LOAD

Based on the elastic dynamic analysis of thick – wall cylinder under impact load with dynamic linear and non-linear finite element method(FEM), the change rules of stress, displacement, velocity of thick-wall cylinder were presented under impact load, the result of FEM is coincident with the analytical result. So we can conclude that the setup of the mechanic model is feasible, the calculating result is believable, and the result can be used for the elastic design of thick-wall cylinder under impact load, it also lays the foundation of elasto-plastical analysis of thick-wall cylinder under impact load.