Steady growth of a crack with a rate and temperature sensitive cohesive zone |
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Authors: | F Costanzo JR Walton |
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Institution: | a Engineering Science and Mechanics Department, The Pennsylvania State University, 212 Earth and Engineering Sciences Building, University Park, PA 16802, USA b Department of Mathematics, Texas A&M University, College Station, TX 77843, USA |
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Abstract: | The steady-state dynamic propagation of a crack in a heat conducting elastic body is numerically simulated. Specifically, a mode III semi-infinite crack with a nonlinear temperature dependent cohesive zone is assumed to be moving in an unbounded homogeneous linear thermoelastic continuum. The numerical results are obtained via a semi-analytical technique based on complex variables and integral transforms. The relation between the thermo-mechanical properties of the failure zone and the resulting crack growth regime are investigated. The results show that temperature dependent solutions are substantially different from purely mechanical ones in that their existence and stability strongly depends on the cohesive zone thermal properties. |
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Keywords: | B Dynamic fracture A Cohesive zone models B Heat conduction |
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