摘要
对流－固砰击作用下两端铰支柱的弹－塑性动力屈曲进行了实验研究。通过分析铰支柱的弹－塑性响应规律，定义了柱的动力屈曲准则和动力塑性准则，井给出了相应的临界冲量值。同时，分析了不同长细比对铰支柱的弹－塑性动力屈曲性能的影响，考察了流－固砰击柱的与高速冲击和低速冲击所不同的动力屈曲特征。
he elasto-plastic dynamic buckling of simply supported columns subjected to axial sol-id-fluid slamming is experimentally investigated. By analyzing the column response, two cri-teria, the dynamic buckling one and the dynamic plastic one are defined and relevant criticalimpulses are given. The effect of the slenderness of a column on the elasto-plastic dynamicbuckling behavior is discussed. The buckling characteristic of columns subjected to solid flu-id slamming different from those subjected to high speed impact and low speed impacts ex-amined.
出处
《华中理工大学学报》
CSCD
北大核心
1994年第3期123-128,共6页
Journal of Huazhong University of Science and Technology
基金
国家自然科学基金
关键词
弹-塑性
屈曲准则
动力
塑性力学
solid-fluid slamming
elasto-plastic
dynamic buckling criterion
dynamic plas-ticity criterion
critical impulse
