非均匀轴向冲击载荷作用圆柱壳的弹塑性动力屈曲

本文对非均匀轴向冲击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非轴对称运动方程,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.讨论了非均匀轴向冲击圆柱壳的变形模态和临界屈曲载荷,并且分别与均匀轴向冲击和静力偏载的情形进行了比较.

ELASTIC-PLASTIC DYNAMIC BUCKLING OF CYLINDRICAL SHELLS UNDER AXIAL NON-UNIFORM IMPACT LOADING

The elastic plastic dynamic buckling of cylindrical shells under axial non uniform impact loading is discussed. The basic equations of structure are derived from the Hamilton variational principle, and the constitution of materials utilizes the increment theory. Increment numerical method is used to solve the kinetic equations. The deformation model and critical dynamic buckling loads of cylindrical shells under axial non uniform impact loading are discussed and compared with results of the cylindrical shells under static axial eccentric loads and axial axisymmetric impact.