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タイトル: Implicit finite element analysis of ductile fracture of a steel frame under cyclic deformation
著者: Ohsaki, Makoto  kyouindb  KAKEN_id  orcid https://orcid.org/0000-0003-4935-8874 (unconfirmed)
Fujiwara, Jun
Miyamura, Tomoshi
Namba, Hisashi
著者名の別形: 大﨑, 純
キーワード: cyclic loading
ductile fracture
finite element analysis
steel frame
stress triaxiality
発行日: Apr-2022
出版者: Wiley
Architectural Institute of Japan
誌名: JAPAN ARCHITECTURAL REVIEW
巻: 5
号: 2
開始ページ: 150
終了ページ: 163
抄録: A ductile fracture model is implemented to an elastoplastic constitutive model of steel material for large-scale finite element analysis of steel frames. The stress modified critical strain model is extended to simulate the structural response after initiation of ductile fracture. The yield stress, Young's modulus, as well as the stress are reduced using the fracture variable. Positive definiteness of the material tangent stiffness matrix is always maintained, and the unbalanced loads are carried over to the succeeding step to analyze the responses in the range of degrading strength using an implicit finite element analysis. It is shown using a notched rod model and a double notched plate that the proposed model can simulate steep stiffness degradation due to strain localization after ductile fracture. Applicability to a large-scale finite element analysis is investigated using a component frame of moment frame subjected to cyclic forced deformation.
著作権等: © 2022 The Authors. Japan Architectural Review published by John Wiley & Sons Australia, Ltd on behalf of Architectural Institute of Japan.
This is an open access article under the terms of the Creative Commons Attribution-NonCommercial-NoDerivs License, which permits use and distribution in any medium, provided the original work is properly cited, the use is non-commercial and no modifications or adaptations are made.
URI: http://hdl.handle.net/2433/279208
DOI(出版社版): 10.1002/2475-8876.12264
出現コレクション:学術雑誌掲載論文等

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