2017年8月14日
Exactly solvable model for a velocity jump observed in crack propagation in viscoelastic solids
Scientific Reports
- ,
- 巻
- 7
- 号
- 1
- 開始ページ
- 8065
- 終了ページ
- 8065
- 記述言語
- 英語
- 掲載種別
- 研究論文(学術雑誌)
- DOI
- 10.1038/s41598-017-07214-8
- 出版者・発行元
- NATURE PUBLISHING GROUP
Needs to impart appropriate elasticity and high toughness to viscoelastic polymer materials are ubiquitous in industries such as concerning automobiles and medical devices. One of the major problems to overcome for toughening is catastrophic failure linked to a velocity jump, i.e., a sharp transition in the velocity of crack propagation occurred in a narrow range of the applied load. However, its physical origin has remained an enigma despite previous studies over 60 years. Here, we propose an exactly solvable model that exhibits the velocity jump incorporating linear viscoelasticity with a cutoff length for a continuum description. With the exact solution, we elucidate the physical origin of the velocity jump: it emerges from a dynamic glass transition in the vicinity of the propagating crack tip. We further quantify the velocity jump together with slow- and fast-velocity regimes of crack propagation, which would stimulate the development of tough polymer materials.
- リンク情報
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- DOI
- https://doi.org/10.1038/s41598-017-07214-8
- Web of Science
- https://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcAuth=JSTA_CEL&SrcApp=J_Gate_JST&DestLinkType=FullRecord&KeyUT=WOS:000407559800032&DestApp=WOS_CPL
- URL
- http://orcid.org/0000-0001-9003-5036
- Scopus Url
- http://www.scopus.com/inward/record.url?eid=2-s2.0-85027462252&partnerID=MN8TOARS
- ID情報
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- DOI : 10.1038/s41598-017-07214-8
- ISSN : 2045-2322
- ORCIDのPut Code : 53478464
- SCOPUS ID : 85027462252
- Web of Science ID : WOS:000407559800032