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タイトル: Step-by-step unbalanced force iteration method for cable-strut structure with irregular shape
著者: Ma, Qing
Ohsaki, Makoto  kyouindb  KAKEN_id  orcid https://orcid.org/0000-0003-4935-8874 (unconfirmed)
Chen, Zhihua
Yan, Xiangyu
著者名の別形: 大﨑, 純
キーワード: Cable-strut structure
Tensegrity
Prestress design
Form finding
発行日: 15-Dec-2018
出版者: Elsevier BV
誌名: Engineering Structures
巻: 177
開始ページ: 331
終了ページ: 344
抄録: In the design process of a cable-strut structure, the desired shape is first defined and the prestress can be obtained if the geometry is feasible; otherwise, the geometry must be modified. Thus, the initial step for prestress calculation is to estimate the feasibility of the geometry. In this paper, a method called Unbalanced Force Iteration (UFI) is proposed to remove the unbalanced forces using the equilibrium and stiffness equations. Feasibility of the geometry can be judged by the convergence property of UFI. Self-stress modes can be directly obtained easily through UFI method, if initial geometry is feasible. For structures with infeasible initial geometry, the Step-by-Step UFI, which combines finite element analysis and UFI, is proposed to gradually move the nodes to feasible locations. Three examples of cable domes with feasible geometry and three examples of cable domes with irregular and infeasible initial geometry are presented to verify the ability of UFI and Step-by-Step UFI for designing new irregular and asymmetric cable-strut structures.
著作権等: © 2018. This manuscript version is made available under the CC-BY-NC-ND 4.0 license http://creativecommons.org/licenses/by-nc-nd/4.0.
The full-text file will be made open to the public on 15 December 2020 in accordance with publisher's 'Terms and Conditions for Self-Archiving'.
This is not the published version. Please cite only the published version.
この論文は出版社版でありません。引用の際には出版社版をご確認ご利用ください。
URI: http://hdl.handle.net/2433/242991
DOI(出版社版): 10.1016/j.engstruct.2018.09.081
出現コレクション:学術雑誌掲載論文等

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