Computational study of the influence of microstructure on fracture behavior near crack-tip field in nacre-like materials

Ye, Xiaoyan; Nakatani, Akihiro

doi:https://doi.org/10.1016/j.mechmat.2024.105034

Computational study of the influence of microstructure on fracture behavior near crack-tip field in nacre-like materials

Ye, Xiaoyan; Nakatani, Akihiro

Mechanics of Materials, 2024, 195, 105034

アクセス数:98件（2025-05-21 18:04 集計）

固定URL: https://hdl.handle.net/11094/97649

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タイトル	Computational study of the influence of microstructure on fracture behavior near crack-tip field in nacre-like materials
著者	著者名 Ye, Xiaoyan
著者	NRID 1000050252606 1000050252606 ORCID 0000-0001-7212-9303 0000-0001-7212-9303 researchmap permalink akihironakatani akihironakatani Scopus Author ID 7005104428 7005104428 著者名 Nakatani, Akihiro
キーワード等	Fracture mechanism
	Nacre-like materials
	Near crack-tip field
	Small-scale failure
	Toughness
内容	Ye X., Nakatani A.. Computational study of the influence of microstructure on fracture behavior near crack-tip field in nacre-like materials. Mechanics of Materials 195, 105034 (2024); https://doi.org/10.1016/j.mechmat.2024.105034.
抄録	The small-scale failure process around a plane strain mode I crack in nacre-like materials is analyzed. The displacement increments of boundary nodes are specified by the analytical solutions based on the orthotropic linear elasticity to conduct an incremental finite element analysis. We set up a structural model composed of staggered arranged brittle aragonite tablets and cohesive zones within a process window surrounding the crack tip to investigate the toughness as well as the deformation mechanism in the fracture process zone. The results obtained by the parametric studies of different geometries and mechanical properties in the microstructure of the materials show that the aspect of failure in the near-tip fields can be categorized into four distinct fracture mechanisms. These mechanisms significantly affect the fracture toughness with differences of hundreds of times. We show a failure-mechanism map in which these fracture mechanisms can be divided into regions of geometry and mechanical properties in microstructure. Findings obtained in this study about the toughening mechanisms give us the useful knowledge to design novel materials with specific microstructures to control fracture mechanisms.
出版者	Elsevier B.V.
収録物名	Mechanics of Materials
巻(号)	195
ページ	105034
刊行年月	2024-08-01
言語	英語
ハンドルURL	https://hdl.handle.net/11094/97649
PISSN	01676636
関連情報 (isIdenticalTo)	DOI (出版社版) https://doi.org/10.1016/j.mechmat.2024.105034
アクセス権	open access
権利情報	This article is licensed under a Creative Commons Attribution 4.0 International License.
出版タイプ	Version of Record
カテゴリ	学術雑誌論文 Journal Article

資源タイプ	学術雑誌論文
ローカル資源タイプ	学術雑誌論文
DCTERMS.bibliographicCitation	Mechanics of Materials. 2024, 195, p. 105034
DC.title	Computational study of the influence of microstructure on fracture behavior near crack-tip field in nacre-like materials
DC.creator	Ye, Xiaoyan
DC.creator	Nakatani, Akihiro
DC.publisher	Elsevier B.V.
DC.language' scheme='DCTERMS.RFC1766	英語
DCTERMS.issued' scheme='DCTERMS.W3CDTF	2024-08-01
DC.identifier	https://doi.org/10.1016/j.mechmat.2024.105034
DC.subject	Fracture mechanism
	Nacre-like materials
	Near crack-tip field
	Small-scale failure
	Toughness
DC.description	Ye X., Nakatani A.. Computational study of the influence of microstructure on fracture behavior near crack-tip field in nacre-like materials. Mechanics of Materials 195, 105034 (2024); https://doi.org/10.1016/j.mechmat.2024.105034.
DCTERMS.abstract	The small-scale failure process around a plane strain mode I crack in nacre-like materials is analyzed. The displacement increments of boundary nodes are specified by the analytical solutions based on the orthotropic linear elasticity to conduct an incremental finite element analysis. We set up a structural model composed of staggered arranged brittle aragonite tablets and cohesive zones within a process window surrounding the crack tip to investigate the toughness as well as the deformation mechanism in the fracture process zone. The results obtained by the parametric studies of different geometries and mechanical properties in the microstructure of the materials show that the aspect of failure in the near-tip fields can be categorized into four distinct fracture mechanisms. These mechanisms significantly affect the fracture toughness with differences of hundreds of times. We show a failure-mechanism map in which these fracture mechanisms can be divided into regions of geometry and mechanical properties in microstructure. Findings obtained in this study about the toughening mechanisms give us the useful knowledge to design novel materials with specific microstructures to control fracture mechanisms.
DC.rights	This article is licensed under a Creative Commons Attribution 4.0 International License.
DC.format	97649
citation_title	Computational study of the influence of microstructure on fracture behavior near crack-tip field in nacre-like materials
citation_author	Ye, Xiaoyan
citation_author	Nakatani, Akihiro
citation_publisher	Elsevier B.V.
citation_language	英語
citation_date	2024-08-01
citation_journal_title	Mechanics of Materials
citation_volume	195
citation_firstpage	105034
citation_doi	https://doi.org/10.1016/j.mechmat.2024.105034
citation_public_url	https://hdl.handle.net/11094/97649

Computational study of the influence of microstructure on fracture behavior near crack-tip field in nacre-like materials

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