摘要
以非线性有限元为工具 ,建立了网壳结构的非线性动力响应分析的有效方法 .将网壳结构动力稳定判定准则引入到结构强度计算中 ,从而使结构的强度问题和稳定问题统一在一起 .重点研究了单层球面网壳的非线性动力响应行为 ,对网壳结构在地震作用下的动力失稳状态以及倒塌现象作了理论上的研究 ,为“结构倒塌”作出了合理的定义 。
A nonlinear dynamic finite element technique was developed to analyze the nonlinear dynamic response of reticulated shells under strong earthquake excitation. The mathematical formulas of stability criteria were established and could be drawn into computational program of structure strength. The strength of the structure and its stability problems were integrated. The nonlinear dynamic behaviors of a single layer reticulated spherical shell were investigated. The dynamic unstable features of the structure were theoretically explained, the definition of structure collapse given, and the unsteady mechanisms of the structure presented.
出处
《华中科技大学学报（自然科学版）》
EI
CAS
CSCD
北大核心
2004年第10期40-42,共3页
Journal of Huazhong University of Science and Technology(Natural Science Edition)
基金
国家自然科学基金资助项目 (5 0 2 0 80 16 )
关键词
网壳结构
非线性
稳定准则
地震作用
失稳机理
reticulated shell
nonlinear
stability criteria
earthquake excitation
unsteady mechanism
