同济大学学报（自然科学版）2024，Vol.52Issue(4)：557-566,10.DOI:10.11908/j.issn.0253-374x.23148
K6型单层球面网壳整体交互耦合屈曲行为
Global Interactive Buckling Behaviour of K6 Single-layer Spherical Reticulated Shells
摘要
Abstract
Using finite element modelling,this paper investigates the buckling and post-buckling behavior of K6 single-layer spherical reticulated shells.Based on the proposed criterion to distinguish global buckling modes,the mechanism and load-carrying capacity reduction of global two-modal interaction is revealed from the perspective of deformation.The results show that the stability of K6 single-layer spherical reticulated shells is vulnerable to global interactive buckling,which may lead to significant load-carrying capacity reduction and unstable post-buckling behavior because of the deformation transition from first global eigenmode dominance at the buckling stage to global interactive mode dominance and second global eigenmode dominance at the initial and final post-buckling stages respectively.Imperfection amplitudes can affect the dominance of global interactive buckling for the ultimate behavior.关键词
空间结构/网壳结构/有限元模拟/耦合屈曲/非线性稳定Key words
spatial structures/reticulated shells/finite element modelling/interactive buckling/nonlinear stability分类
建筑与水利引用本文复制引用
毋凯冬,张业成,伞冰冰,罗永峰..K6型单层球面网壳整体交互耦合屈曲行为[J].同济大学学报（自然科学版）,2024,52(4):557-566,10.基金项目
国家自然科学基金(52208161,51978240) （52208161,51978240）
中央高校基本科研业务费专项资金(B220201017) （B220201017）
