繰り返し軸力と曲げを受ける鋼部材の累積塑性変形下での初亀裂発生に関する解析的評価

URI http://harp.lib.hiroshima-u.ac.jp/it-hiroshima/metadata/7204
ファイル
タイトル
繰り返し軸力と曲げを受ける鋼部材の累積塑性変形下での初亀裂発生に関する解析的評価
別タイトル
Analytical evaluation of crack initiation of steel members subjected to repeated axial force and bending under cumulative deformation in plastic range
著者
氏名 岩井 哲
ヨミ イワイ サトシ
別名 Iwai Satoshi
氏名 横山 誉
ヨミ ヨコヤマ ホマレ
別名 Yokoyama Homare
キーワード
steel structure
repeated loading
crack initiation
damage evaluation
cumulative strain
NDC
511.48
抄録

The objective of this study is to establish damage criteria for steel members at crack initiation due to very low cycle large deformation under repeated axial force and bending in plastic range. It is found that,from analytical results using simple member model and finite element method,axial and lateral deformation vs. load relations well correspond to the results of the previously conducted experiment. A plastic strain per one cycle of stress-strain hysteresis at the critical section,which related to crack initiation,showed 9% to 18% in the case of incremental displacement amplitude loading and about 18% in the case of constant displacement amplitude loading. Cumulative plastic strain values at which a crack occurs are strongly dependent on repeated loading patterns rather than deformed length of the test specimen.

掲載雑誌名
広島工業大学紀要. 研究編
37
開始ページ
93
終了ページ
100
出版年月日
Feb-03
出版者
広島工業大学
ISSN
13469975
NCID
AA11599110
本文言語
日本語
資料タイプ
紀要論文
著者版フラグ
出版社版
関連URL
旧URI
区分
it-hiroshima