圆柱壳在轴压冲击载荷下的非对称屈曲分析

研究了轴向时变冲击载荷作用下的圆柱壳非轴对称弹塑性动力屈曲问题．采用Ｋａｒｍａｎ－Ｄｏｎｎｅｌ运动方程，本构关系采用增量理论，借助增量数值计算方法求解运动方程．计算表明：初始屈曲发生时，圆柱壳的变形模态呈轴对称性形式，而屈曲发生到一定程度时，圆柱壳就会发生非对称性的变形，而且变形相当明显．

Asymmetric Buckling Analysis of Cylindrical Shells under Axial Dynamic Loads

The Karman Donnel kinetic equation is used to study the problem of the elastic plastic dynamic buckling of cylindrical shells under axial dynamic loads. The increment theory is applied to the constitution of material and the increment numerical method is used to solve the kinetic equations. Before the buckling of the cylindrical shells, the dynamic buckling modes are axisymmetic, while after the buckling, the deformation form of the structure is asymmetric.