摘要
用试验分析方法探讨了两端铰支柱在轴向流－固砰击作用下的弹－塑性动力屈后行为。由流－固砰击柱的弹－塑性屈后响应规律考察了这类中速冲击屈曲所不同于高速与低速冲击屈曲的屈后特征，通过对铰支柱塑性失效现象的分析定义了动力塑性失效准则，并给出了相应的塑性失效临界冲量。同时考察了不同加载历史对铰支柱动力屈后性能的影响。
he elasto- plastic dynamic postbuckling of a simply- supported column under solid-fluidslamming is experimentally investigated.The postbuckling characteristics of the column un- der medium speed impact are studied from the response, which are different from those un- der high and low speed impact.Based on the phenomenon of plastic collapse,a dynamic col- lapse criterion is proposed and the relevant critical impulse is given。The influence of differ-ent loading sequence on the postbuckling behavior of the column is also studied。
出处
《华中理工大学学报》
CSCD
北大核心
1994年第4期48-52,共5页
Journal of Huazhong University of Science and Technology
基金
国家自然科学基金
关键词
屈后
流体
固体
冲击
弹性
塑性
fluid-solid slamming
elasto- plastic
postbuckling behavior
plasticity col-lapse
critical impulse
