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Role of surface waves on the relation between crack speed and the work of fracture
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Parisi, Andrea and Ball, Robin (2002) Role of surface waves on the relation between crack speed and the work of fracture. Physical Review B, Vol.66 (No.16). doi:10.1103/PhysRevB.66.165432 ISSN 1098-0121.
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Official URL: http://dx.doi.org/10.1103/PhysRevB.66.165432
Abstract
We show that the delivery of fracture work to the tip of an advancing planar crack is strongly reduced by surface phonon emission, leading to forbidden ranges of crack speed. The emission can be interpreted through dispersion of the group velocity, and Rayleigh and Love branches contribute as well as other high frequency branches of the surface wave dispersion relations. We also show that the energy release rate which enters the Griffith criterion for the crack advance can be described as the product of the continuum solution with a function that only depends on the lattice geometry and describes the lattice influence on the phonon emission. Simulations are performed using a new finite element model for simulating elasticity and fractures. The model, built to allow fast and very large three-dimensional simulations, is applied to the simplified case of two-dimensional samples.
Item Type: | Journal Article | ||||
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Subjects: | Q Science > QC Physics | ||||
Divisions: | Faculty of Science, Engineering and Medicine > Science > Physics | ||||
Library of Congress Subject Headings (LCSH): | Fracture mechanics, Surface waves | ||||
Journal or Publication Title: | Physical Review B | ||||
Publisher: | American Physical Society | ||||
ISSN: | 1098-0121 | ||||
Official Date: | 30 October 2002 | ||||
Dates: |
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Volume: | Vol.66 | ||||
Number: | No.16 | ||||
Number of Pages: | 12 | ||||
DOI: | 10.1103/PhysRevB.66.165432 | ||||
Status: | Peer Reviewed | ||||
Publication Status: | Published | ||||
Access rights to Published version: | Open Access (Creative Commons) | ||||
Date of first compliant deposit: | 1 August 2016 | ||||
Date of first compliant Open Access: | 1 August 2016 | ||||
Funder: | European Union (EU) | ||||
Grant number: | ERBFMRXCT980183 (EU) |
Data sourced from Thomson Reuters' Web of Knowledge
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