{"title":"Stability Analysis of Free-Form Reticulated Shells With Semi-Rigid Joints","authors":"Bingbing San, Wenhui Zhao, Ye Qiu, Shiwen Han","doi":"10.20898/j.iass.2023.016","DOIUrl":null,"url":null,"abstract":"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\n 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\n bending stiffness, torsional stiffness, initial geometrical imperfection and load cases are investigated.","PeriodicalId":42855,"journal":{"name":"Journal of the International Association for Shell and Spatial Structures","volume":null,"pages":null},"PeriodicalIF":1.1000,"publicationDate":"2023-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Journal of the International Association for Shell and Spatial Structures","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.20898/j.iass.2023.016","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q3","JCRName":"ENGINEERING, CIVIL","Score":null,"Total":0}
引用次数: 0
Abstract
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.
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