Bounds on the extensional strains in elastic homogeneous crystals under simple tension |
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Authors: | Boulanger, PH. Hayes, M. |
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Affiliation: | Département de Mathématique, Université Libre de Bruxelles, Campus Plaine C.P.218/1 1050 Bruxelles, Belgium |
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Abstract: | Within the context of the linearized theory of elasticity, weconsider homogeneous crystals, which have orthorhombic, tetragonal,hexagonal symmetry or cubic symmetry (RTHC crystals).When such a crystal is subjected to a simple tension (or compression)of amount T in the direction n, there will be three, generallydifferent, extensional strains along the three mutually perpendiculardirections corresponding to the principal axes of strain. Thepurpose of this paper is to present a simple procedure to placebounds, upper and lower, on the possible extensional strainsin the crystal, both in the case when n is fixed in directionand in the case when n is arbitrary. The procedure allows usto determine whether the bounds are attained or not. |
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Keywords: | anisotropic media linerized elasticity stress strain principal stains upper and lower bounds. |
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