The energy momentum tensor in the presence of body forces and the Peach–Koehler force on a dislocation |
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Authors: | VA Lubarda |
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Institution: | Department of Mechanical and Aerospace Engineering, University of California, San Diego, La Jolla, CA 92093-0411, USA;Montenegrin Academy of Sciences and Arts, Rista Stijovi?a 5, 81000 Podgorica, Montenegro |
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Abstract: | A modified energy momentum tensor, in the presence of body forces, is introduced and used to construct the nonconserved J, M, and L integrals, and to derive the energetic forces associated with a defect motion within the material. The J integral is then applied to evaluate the Peach–Koehler force on an inclined edge dislocation within a large block due to its own weight. The equilibrium position of the dislocation is determined for different boundary conditions of interest in geomechanics. |
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