Prediction of Welding Distortion and Panel Buckling of Car Carrier Decks using Database Generated by FEA

Tajima, Yusuke; Rashed, Sherif; Okumoto, Yasuhisa; Katayama, Yasuo; Murakawa, Hidekazu

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タイトル	Prediction of Welding Distortion and Panel Buckling of Car Carrier Decks using Database Generated by FEA
著者	Tajima, Yusuke Tajima, Yusuke
	Rashed, Sherif Rashed, Sherif
	Okumoto, Yasuhisa Okumoto, Yasuhisa
	Katayama, Yasuo Katayama, Yasuo
	Murakawa, Hidekazu Murakawa, Hidekazu
キーワード等	Welding Deformation
	Welding Procedure
	Tendon Force
	Buckling
	Deflection
	Thermal Elastic Plastic Analysis
	Plate Width Effects
	Edge Effect
抄録	Straightening of welding deformation in shipbuilding is an expensive and time consuming process. Therefore, minimizing welding deformation is required in both design and construction stages. When welding thin plates such as those used in passenger car decks in Car Carriers, welding longitudinal shrinkage, caused by welding tendon force, causes compressive stress in the surrounding plate fields that sometimes causes these plate fields to buckle. Straightening of a buckled plate is difficult and buckling should be avoided whenever possible. For this purpose, a cross stiffened panel of a car deck of a Car Carrier is considered. A series of thermal elastic plastic finite element analyses is carried out to predict the welding tendon forces of Longitudinals and Transverses when utilizing continuous and intermittent welding with different welding process specifications. Bi-directional residual compressive stresses are evaluated and buckling is checked. Results indicate that when the geometry of the welded cross-section is similar, welding tendon force depends almost only on the average heat input per unit length of the weld line, no matter whether welding is continuous or intermittent. The effectiveness of parallel and zigzag intermittent welding in reducing welding residual stress and preventing buckling is quantified. A tendon force database may be created such that designers may easily check buckling and select welding specifications
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	36
号	1
開始ページ	65
終了ページ	71
刊行年月	2007-07
ISSN	03874508
NCID	AA00867058
URL	http://hdl.handle.net/11094/6722
言語	英語
カテゴリ	紀要論文 Departmental Bulletin Paper
カテゴリ	Transactions of JWRI / Vol.36 No.1 (2007-07)

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.36(1) P.65-P.71
DC.title	Prediction of Welding Distortion and Panel Buckling of Car Carrier Decks using Database Generated by FEA
DC.creator	Tajima, Yusuke
	Rashed, Sherif
	Okumoto, Yasuhisa
	Katayama, Yasuo
	Murakawa, Hidekazu
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	2007-07
DC.identifier" scheme="DCTERMS.URI	http://hdl.handle.net/11094/6722
DC.subject	Welding Deformation
	Welding Procedure
	Tendon Force
	Buckling
	Deflection
	Thermal Elastic Plastic Analysis
	Plate Width Effects
	Edge Effect
DCTERMS.abstract	Straightening of welding deformation in shipbuilding is an expensive and time consuming process. Therefore, minimizing welding deformation is required in both design and construction stages. When welding thin plates such as those used in passenger car decks in Car Carriers, welding longitudinal shrinkage, caused by welding tendon force, causes compressive stress in the surrounding plate fields that sometimes causes these plate fields to buckle. Straightening of a buckled plate is difficult and buckling should be avoided whenever possible. For this purpose, a cross stiffened panel of a car deck of a Car Carrier is considered. A series of thermal elastic plastic finite element analyses is carried out to predict the welding tendon forces of Longitudinals and Transverses when utilizing continuous and intermittent welding with different welding process specifications. Bi-directional residual compressive stresses are evaluated and buckling is checked. Results indicate that when the geometry of the welded cross-section is similar, welding tendon force depends almost only on the average heat input per unit length of the weld line, no matter whether welding is continuous or intermittent. The effectiveness of parallel and zigzag intermittent welding in reducing welding residual stress and preventing buckling is quantified. A tendon force database may be created such that designers may easily check buckling and select welding specifications
citation_title	Prediction of Welding Distortion and Panel Buckling of Car Carrier Decks using Database Generated by FEA
citation_author	Tajima, Yusuke
	Rashed, Sherif
	Okumoto, Yasuhisa
	Katayama, Yasuo
	Murakawa, Hidekazu
citation_publisher	大阪大学接合科学研究所
citation_language	英語
citation_date	2007-07
citation_journal_title	Transactions of JWRI
citation_volume	36
citation_issue	1
citation_firstpage	65
citation_lastpage	71
citation_issn	03874508
citation_public_url	http://hdl.handle.net/11094/6722
citation_keywords	Welding Deformation
	Welding Procedure
	Tendon Force
	Buckling
	Deflection
	Thermal Elastic Plastic Analysis
	Plate Width Effects
	Edge Effect

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