Influence of Root Gap and Tack Weld on Transverse Shrinkage during Welding

Murakawa, Hidekazu; Sano, Masanori; Wang, Jiangchao

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タイトル	Influence of Root Gap and Tack Weld on Transverse Shrinkage during Welding
著者	Murakawa, Hidekazu Murakawa, Hidekazu
	Sano, Masanori Sano, Masanori
	Wang, Jiangchao 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.
公開者	大阪大学接合科学研究所
公開者の別表記	Joining and Welding Research Institute, Osaka University
公開者 (ヨミ)	オオサカダイガクセツゴウカガクケンキュウジョ
掲載誌名	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
ISSN	03874508
NCID	AA00867058
URL	http://hdl.handle.net/11094/23161
言語	英語
カテゴリ	紀要論文 Departmental Bulletin Paper
カテゴリ	Transactions of JWRI / Vol.41 No.1 (2012-06)

著者版フラグ	publisher
NII資源タイプ	紀要論文
ローカル資源タイプ	紀要論文
dcmi資源タイプ	text
DCTERMS.bibliographicCitation	Transactions of JWRI.41(1) P.65-P.70
DC.title	Influence of Root Gap and Tack Weld on Transverse Shrinkage during Welding
DC.creator	Murakawa, Hidekazu
	Sano, Masanori
	Wang, Jiangchao
DC.publisher	大阪大学接合科学研究所
DC.language" scheme="DCTERMS.RFC1766	英語
DCTERMS.issued" scheme="DCTERMS.W3CDTF	2012-06
DC.identifier" scheme="DCTERMS.URI	http://hdl.handle.net/11094/23161
DC.subject	Welding deformation
	Transverse shrinkage
	Root gap
	Tack welding
	Finite Element simulation
DCTERMS.abstract	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.
citation_title	Influence of Root Gap and Tack Weld on Transverse Shrinkage during Welding
citation_author	Murakawa, Hidekazu
	Sano, Masanori
	Wang, Jiangchao
citation_publisher	大阪大学接合科学研究所
citation_language	英語
citation_date	2012-06
citation_journal_title	Transactions of JWRI
citation_volume	41
citation_issue	1
citation_firstpage	65
citation_lastpage	70
citation_issn	03874508
citation_public_url	http://hdl.handle.net/11094/23161
citation_keywords	Welding deformation
	Transverse shrinkage
	Root gap
	Tack welding
	Finite Element simulation

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