STABILITY ANALYSIS OF FREE-FORM RETICULATED SHELLS WITH SEMI-RIGID JOINTS

被引：0
|
作者：
San, Bingbing [1 ]
Zhao, Wenhui [1 ]
Qiu, Ye [1 ]
Han, Shiwen [1 ]
机构：
[1] Hohai Univ, Coll Civil & Transportat Engn, Xikang Rd 1, Nanjing 210098, Jiangsu, Peoples R China
来源：
JOURNAL OF THE INTERNATIONAL ASSOCIATION FOR SHELL AND SPATIAL STRUCTURES | 2023年 / 64卷 / 02期
基金：
中国国家自然科学基金;
关键词：
free-form reticulated shells; semi-rigid joints; stability analysis; shape optimization; parameters analysis; SHAPE OPTIMIZATION;
D O I：
10.20898/j.iass.2023.016
中图分类号：
TU [建筑科学];
学科分类号：
0813 ;
摘要：
Focusing on the free-form reticulated shells with semi-rigid joints, a stability study is conducted in this paper. Firstly, the gradient-based optimization and genetic optimization are conducted respectively, by which the local optimal shell and the global shell are obtained. A parametrical non-linear stability analysis is performed on the local and global optimal reticulated shells using ANSYS. Then, the ultimate bearing capacity and instability modes of both shells are obtained. The semi-rigid joints are modelled by non-linear spring element, named COMBIN39. The effects of bending stiffness, torsional stiffness, initial geometrical imperfection and load cases are investigated.
引用
收藏
页码：84 / 94
页数：11
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