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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
El-Sheikhy, Refat
El-Sheikhy, Refat
Naka, Masaaki
Naka, Masaaki
著者 (ヨミ)
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.
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
34
号
2
開始ページ
81
終了ページ
89
刊行年月
2005-12
ISSN
03874508
NCID
AA00867058
URL
http://hdl.handle.net/11094/4478
言語
英語
カテゴリ
紀要論文 Departmental Bulletin Paper
Transactions of JWRI / Vol.34 No.2 (2005-12)
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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
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
2005-12
DC.identifier" scheme="DCTERMS.URI
http://hdl.handle.net/11094/4478
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.
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
citation_publisher
大阪大学接合科学研究所
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_issn
03874508
citation_public_url
http://hdl.handle.net/11094/4478
citation_keywords
Ductile material
Fracture
Fracture Theory
Cracking mechanism
Failure analysis