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． The non-axisymmetric elasto-plastic dynamic buckling of cylindrical shells under axial impact load is studied. Using Karman-Donnel equations of motion, the constitutive equation uses incremental theory to solve the equations of motion using incremental numerical methods. The calculation shows that when the initial buckling occurs, the deformation mode of the cylindrical shell is in the form of axial symmetry. When the buckling occurs to a certain extent, the cylindrical shell will undergo asymmetrical deformation and the deformation is quite obvious.