摘要
本文提出了任意激励下弹性结构的稳定分析方法.采用有限元方法跟踪结构的时程反应过程以及对应的能量变化情况,根据能量的变化判断结构在动力反应过程中的稳定性.数值算例证明本文方法能分析并判断弹性结构在任意动力激励下可能发生的各类失稳破坏.
In this paper the method for stability analysis of elastic structures is proposed. Time history response and corresponding energy changing process of elastic structures are traced by the nonlinear finite element method. The stability in time history response of structures is judged according to the changing of energy. Numerical examples show that the method presented in this paper can analyze and judge all kinds of stability of elastic structures under arbitrary dynamic excitation.
出处
《土木工程学报》
EI
CSCD
北大核心
1998年第1期26-32,共7页
China Civil Engineering Journal
关键词
弹性结构
任意激励
稳定分析
elastic structures, stability, arbitrary excitation.
