径向余弦冲击的长圆柱壳弹性脉冲屈曲

THE ELASTIC DYNAMIC PULSE BUCKLING OF A THIN CYLINDRICAL SHELL UNDER RADIAL COSINOIDAL IMPULSE

根据已有的实验现象假定变形模态,采用Lagrange方法分析了单位长度薄圆环(a/h=480)在余弦冲击载荷作用下的弹性脉冲动屈曲。导出了动力屈曲方程组,借助数值方法求解方程,并与已有的计算结果进行了比较,得出结论。

On the basis of the results of some related experiments, ultilizing Lagrange method and assuming deformation mode, this paper presents an analysis of the elastic pulse buckling of a thin cylindrical shell of unit length subjected to a cosinoidal impulsive loading. In the paper, the dynamic buckling equations have been derived and have been solved by using numerical methods, and results of calculation are compared with some related calculations obtained by other authors.