摘要
本文同时考虑了几何非线性与材料非线性,对单层球面网壳结构在简谐荷载、阶跃荷载作用下进行了动力响应分析。通过对极限荷载、最大节点位移及塑性杆件比例这些重要参数的统计、分析和归纳,剖析了单层球面网壳结构在简单动荷载下的失效机理。同时,通过比较刚度矩阵,进一步研究了结构在动载与静载下的失效差别。
In this paper, non-linear dynamic responses of single-layer spherical shells subjected to harmonic loads and step loads are analyzed, in which both the geometric non-linearity and the material non-linearity are all taken into account, Based on the statistic and analysis of some important parameters, such as limit loads, structural maximum displacements and ratios of plastic members, failure mechanism of single-layer spherical shells subjected to simple dynamic loads is presented. Furthermore, comparisons are made with dynamic failure and static failure of single-layer spherical shells through the structural stiffness matrix.
出处
《工程抗震与加固改造》
2006年第4期10-17,共8页
Earthquake Resistant Engineering and Retrofitting
基金
国家自然科学基金重点项目(50338010)
关键词
单层球面网壳
简谐荷载
阶跃荷载
刚度矩阵
失效机理
single-layer spherical shells
harmonic loads
step loads
stiffness matrix
failure mechanism.
