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jwri41_01-065 pdf 384 KB 199 2012.11.16

論文情報

タイトル
Influence of Root Gap and Tack Weld on Transverse Shrinkage during Welding
著者
NRID
1000060166270 1000060166270
著者名
Murakawa, Hidekazu
NRID
1000040088456 1000040088456
著者名
Sano, Masanori
著者名
Wang, Jiangchao
キーワード等
Welding deformation
Transverse shrinkage
Root gap
Tack welding
Finite Element simulation
抄録
Welding distortion is caused by the local shrinkage produced during the welding thermal cycle. The local shrinkage can be separated into four components, namely transverse shrinkage, longitudinal shrinkage, transverse bending and longitudinal bending. In this research, the influence of the root gap on the transverse shrinkage of welded joints is closely examined from the aspect of closing or opening of the root gap with the movement of the welding torch. Since the contact phenomena between the two surfaces forming the root gap are important, an interface element is introduced to a thermal elastic-plastic FEM. The butt welding model and fillet welding model are used to study the influence of gap size and the pitch of tack welding. Once the relation between the size of the gap and the transverse shrinkage is obtained, it can be introduced to the elastic FEM using the inherent deformation to predict the welding distortion of large structures.
出版者
大阪大学接合科学研究所
Joining and Welding Research Institute, Osaka University
オオサカ ダイガク セツゴウ カガク ケンキュウジョ
収録物名
Transactions of JWRI
巻
41
号
1
開始ページ
65
終了ページ
70
刊行年月
2012-06
言語
英語
ハンドルURL
https://hdl.handle.net/11094/23161
ISSN
03874508
NCID
AA00867058
アクセス権
open access
出版タイプ
Version of Record
カテゴリ
紀要論文 Departmental Bulletin Paper
Transactions of JWRI / Vol.41 No.1 (2012-06)