Scaling of crack propagation in rubber sheets

Autor:	Krishnaswa Ravi-Chandar, Hepeng Zhang, Chih-Hung Chen, J. Niemczura, Michael Marder
Rok vydání:	2011
Předmět:	Physics Elastic energy density General Physics and Astronomy Fracture mechanics Mechanics Extension ratio Condensed Matter::Materials Science Classical mechanics Natural rubber visual_art visual_art.visual_art_medium Calibration Supersonic speed Crystallite Scaling
Zdroj:	EPL (Europhysics Letters). 96:36009
ISSN:	1286-4854 0295-5075
DOI:	10.1209/0295-5075/96/36009
Popis:	We have conducted experiments and numerical simulations to investigate supersonic cracks. The experiments are performed at 85 ◦ C to suppress strain-induced crystallites that complicate experiments at lower temperature. Calibration experiments were performed to obtain the parameters needed to compare with a theory including viscous dissipation. We find that both experiments and numerical simulations support supersonic cracks, and we discover a transition from subsonic to supersonic as we plot experimental crack speed curves vs. extension ratio for different sized samples. Both experiments and simulations show two different scaling regimes: the speed of subsonic cracks scales with the elastic energy density while the speed of supersonic cracks scales with the extension ratio. Crack openings have qualitatively different shapes in the two scaling regimes. Copyright c EPLA, 2011
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::7af63a264dc1015ca8c6211e12db86b4 https://doi.org/10.1209/0295-5075/96/36009 Zobrazit plný text záznamu