The elastic fields of misfit cylindrical particles: a dislocation-based numerical approach |
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Authors: | Jesus Lerma Tariq Khraishi Yu-Lin Shen Brian D Wirth |
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Institution: | a Department of Mechanical Engineering, University of New Mexico, Albuquerque, NM 87131, USA;b Materials Science and Technology Division, Lawrence Livermore National Laboratory, Livermore, California 94551, USA |
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Abstract: | Analytical solutions for the displacement and stress fields due to a misfit particle in a host matrix can be difficult to obtain, especially for complex particle geometries. In this work, we present a numerical method for finding such fields in the case of infinitely-long particles. The method is based on discretizing the continuous misfit region between the particle and matrix into local misfit regions consisting of interstitial dislocation loops. The results presented here indicate very good agreement with analytical solutions and better convergence with increasing loop density. |
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Keywords: | Dislocation mechanics Eigenstrains Particle strengthening |
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