Theoretical study of dynamic elastic buckling of columns subjected to intermediate velocity impact loads
Theoretical study of dynamic elastic buckling of columns subjected to intermediate velocity impact loads
复制标题
中速冲击荷载作用下柱的动弹性屈曲理论研究
DOI：
10.1016/s0020-7403(02)00009-7
复制
发表时间：
2002
期刊：
影响因子：
--
通讯作者：
H. Cheong
中科院分区：
文献类型：
--
作者：
S. Cui;H. Hao;H. Cheong
本文从理论上研究了简支圆柱在中速冲击下的弹性动力屈曲问题。建立了动力屈曲方程。推导了柱在半正弦形中速冲击载荷作用下动力响应的理论解。根据理论解的特点，提出了一个确定临界屈曲条件和估算临界屈曲载荷的动力屈曲准则。在这项研究中得到的理论结果与实验数据进行了比较。它们也与其他作者得到的数值结果进行了比较。他们之间的良好协议得到遵守。
Dynamic elastic buckling of simply supported columns subjected to intermediate velocity impact is theoretically studied in this paper. The dynamic buckling equation is set up. Theoretical solution of dynamic responses of columns subjected to a half-sine shape intermediate velocity impact load is derived. Based on the characteristics of the theoretical solution, a dynamic buckling criterion is proposed to determine the critical buckling condition and to estimate the dynamic buckling critical load. Theoretical results obtained in this study are compared with experimental data. They are also compared with numerical results obtained by other authors. Good agreements between them are observed.