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A dynamic discrete dislocation plasticity study of elastodynamic shielding of stationary cracks
File | Description | Size | Format | |
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stationary_crack.pdf | Accepted version | 11.22 MB | Adobe PDF | View/Open |
1-s2.0-S0022509616300497-main.pdf | Published version | 801.44 kB | Adobe PDF | View/Open |
Title: | A dynamic discrete dislocation plasticity study of elastodynamic shielding of stationary cracks |
Authors: | Gurrutxaga Lerma, B Balint, DS Dini, D Sutton, AP |
Item Type: | Journal Article |
Abstract: | Employing Dynamic Discrete Dislocation Plasticity (D3P), an elastodynamic analysis of the shielding of a stationary crack tip by dislocations is studied. Dislocations are generated via FrankRead sources, and make a negligible contribution to the shielding of the crack tip, whereas dislocations generated at the crack tip via homogeneous nucleation dominate the shielding. Their effect is found to be highly localised around the crack, leading to a magnification of the shielding when compared to time-independent, elastostatic predictions. The resulting attenuation of KI (t) is computed, and is found to be directly proportional to the applied load and to √ t. |
Issue Date: | 9-Sep-2016 |
Date of Acceptance: | 25-Aug-2016 |
URI: | http://hdl.handle.net/10044/1/39516 |
DOI: | https://dx.doi.org/10.1016/j.jmps.2016.08.014 |
ISSN: | 0022-5096 |
Publisher: | Elsevier |
Start Page: | 1 |
End Page: | 11 |
Journal / Book Title: | Journal of the Mechanics and Physics of Solids |
Volume: | 98 |
Copyright Statement: | Creative Commons Attribution 4.0 International (CC BY 4.0) |
Sponsor/Funder: | Engineering & Physical Science Research Council (EPSRC) Engineering and Physical Sciences Research Council |
Funder's Grant Number: | N/A EP/L015579/1 |
Keywords: | Mechanical Engineering & Transports 01 Mathematical Sciences 02 Physical Sciences 09 Engineering |
Publication Status: | Published |
Appears in Collections: | Condensed Matter Theory Mechanical Engineering Physics Faculty of Natural Sciences Faculty of Engineering |