Fracture Analysis of Ductile Materials by Means of Recent Fracture Theory (MN-r_p -σ_θ)

El-Sheikhy, Refat; Naka, Masaaki; ナカ, マサアキ

doi:https://doi.org/10.18910/4478

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このアイテムへのリンクには次のURLをご利用ください: https://doi.org/10.18910/4478

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論文情報

タイトル	Fracture Analysis of Ductile Materials by Means of Recent Fracture Theory (MN-r_p -σ_θ)
著者	著者名 El-Sheikhy, Refat
著者	NRID 1000000005985 1000000005985 著者名 Naka, Masaaki ナカ, マサアキ
キーワード等	Ductile material
	Fracture
	Fracture Theory
	Cracking mechanism
	Failure analysis
抄録	The current theory is based on the original version of (MN – r_p σ_θ) theory for brittle and quasi-brittle materials. It was developed with Linear Elastic Fracture Mechanics LEFM to study the cracking in the elastic stage for non ductile materials and materials with low ductility. In this research a new of the theory version for the fracture of pure ductile materials and fracture in brittle – ductile transition for semi brittle semi ductile materials is proposed. This new proposed theory for ductile fracture is called the DMN-ductile theory. It has a new concept and a new mechanism. It proposed that the fracture direction can be predicted in the elastic stage in LEFM where the critical fracture load will include two parts one from the elastic stage and the other part from the plastic stage. The fracture load would be determined with Elastic – Plastic Fracture Mechanics EPFM. The direction of the fracture will be in LEFM in the beginning of the propagation and will extend in the same direction in the plastic stage for the same fracture increment, but it may change in the nest fracture problems. In addition, it unifies all views of researches on ductile fracture energy approach. It could introduce a new concept for the ductile fracture process for dealing with any crack and for predicting any required fracture aspect.
出版者	大阪大学接合科学研究所
	オオサカダイガクセツゴウカガクケンキュウジョ
	Joining and Welding Research Institute, Osaka University
収録物名	Transactions of JWRI
巻	34
号	2
開始ページ	81
終了ページ	89
刊行年月	2005-12
言語	英語
ハンドルURL	https://hdl.handle.net/11094/4478
DOI	https://doi.org/10.18910/4478
PISSN	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
カテゴリ	Transactions of JWRI / Vol.34 No.2 (2005-12)

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.34(2) p.81-p.89
DC.title	Fracture Analysis of Ductile Materials by Means of Recent Fracture Theory (MN-r_p -σ_θ)
DC.creator	El-Sheikhy, Refat
	Naka, Masaaki
	ナカ, マサアキ
DC.publisher	大阪大学接合科学研究所
	オオサカダイガクセツゴウカガクケンキュウジョ
	Joining and Welding Research Institute, Osaka University
DC.language' scheme='DCTERMS.RFC1766	英語
DC.type' scheme='DCTERMS.DCMIType	text
DCTERMS.issued' scheme='DCTERMS.W3CDTF	2005-12
DC.subject	Ductile material
	Fracture
	Fracture Theory
	Cracking mechanism
	Failure analysis
DCTERMS.abstract	The current theory is based on the original version of (MN – r_p σ_θ) theory for brittle and quasi-brittle materials. It was developed with Linear Elastic Fracture Mechanics LEFM to study the cracking in the elastic stage for non ductile materials and materials with low ductility. In this research a new of the theory version for the fracture of pure ductile materials and fracture in brittle – ductile transition for semi brittle semi ductile materials is proposed. This new proposed theory for ductile fracture is called the DMN-ductile theory. It has a new concept and a new mechanism. It proposed that the fracture direction can be predicted in the elastic stage in LEFM where the critical fracture load will include two parts one from the elastic stage and the other part from the plastic stage. The fracture load would be determined with Elastic – Plastic Fracture Mechanics EPFM. The direction of the fracture will be in LEFM in the beginning of the propagation and will extend in the same direction in the plastic stage for the same fracture increment, but it may change in the nest fracture problems. In addition, it unifies all views of researches on ductile fracture energy approach. It could introduce a new concept for the ductile fracture process for dealing with any crack and for predicting any required fracture aspect.
DC.identifier	10.18910/4478
DC.format	application/pdf
citation_doi	https://doi.org/10.18910/4478
citation_title	Fracture Analysis of Ductile Materials by Means of Recent Fracture Theory (MN-r_p -σ_θ)
citation_author	El-Sheikhy, Refat
	Naka, Masaaki
	ナカ, マサアキ
citation_publisher	大阪大学接合科学研究所
	オオサカダイガクセツゴウカガクケンキュウジョ
	Joining and Welding Research Institute, Osaka University
citation_language	英語
citation_date	2005-12
citation_journal_title	Transactions of JWRI
citation_volume	34
citation_issue	2
citation_firstpage	81
citation_lastpage	89
citation_public_url	https://hdl.handle.net/11094/4478
citation_doi_detail	10.18910/4478

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