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
File
Title
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
Title Alternative
Analytical evaluation of crack initiation of steel members subjected to repeated axial force and bending under cumulative deformation in plastic range
Author
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
Subject
steel structure
repeated loading
crack initiation
damage evaluation
cumulative strain
NDC
511.48
Abstract

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.

Journal Title
広島工業大学紀要. 研究編
Volume
37
Spage
93
Epage
100
Published Date
Feb-03
Publisher
広島工業大学
ISSN
13469975
NCID
AA11599110
Language
jpn
NIIType
Departmental Bulletin Paper
Text Version
出版社版
Relation URL
Old URI
Set
it-hiroshima