圆柱壳在径向冲击载荷作用下的弹性脉冲屈曲

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Elastic Pulse Buckling of Cylindrical Shells under Radial Impulsive Loading

Department of Naval Architecture and Ocean Engineering, Huazhong University of Science and Technology, Wuhan 430074, P. R. China

摘要: 当圆柱壳承受径向脉冲载荷时,如果其径厚比大于一特定值,圆柱壳将产生弹性动力屈曲.本文根据有关实验结果,假定变形模态,采用Lagrange方法分析了有限长薄圆柱壳(a/h=480)在余弦冲击载荷作用下的弹性脉冲动力屈曲.导出了动力屈曲方程组,借助数值方法求解方程,并与有关计算结果进行了比较.
- 圆柱壳 /
- 冲击载荷 /
- 弹性动力屈曲
Abstract: When a cylindrical shell is subjected to dynamic implusive loading in radialdirection and foe ratio of radius-to-thickness exceeds a special value.the cylindricalshell will produce elastic dynamic buckling.This paper which is based on foe results ofsome relative experiments,assumes deformation mode and utilizes Lagrange method toanalyse the elastic pluse buckling of a thin cylindrical shell with a finite length under acosine impulse.The dynamic buckling equations are derived and solved by numericalmethod.The results of calculation are compared with some relative calculation resultswhich were obtained by other authors.
- cylindrical shells /
- impulsive loading /
- elastic dynamic buckling

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