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Descripción
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| In this paper we present a model and a fully implicit algorithm for largestrainanisotropicelasto-plasticity with mixed hardening in which the elastic anisotropy is taken into account. The formulation is developed using hyperelasticity in terms of logarithmicstrains, the multiplicative decomposition of the deformation gradient into an elastic and a plastic part, and the exponential mapping. The novelty in the computational procedure is that it retains the conceptual simplicity of the largestrain isotropic elasto-plastic algorithms based on the same ingredients. The plastic correction is performed using a standard small strain procedure in which the stresses are interpreted as generalized Kirchhoff stresses and the strains as logarithmicstrains, and the largestrain kinematics is reduced to a geometric pre- and post-processor. The procedure is independent of the specified yield function and type of hardening used, and for isotropic elasticity, the algorithm of Eterovi? and Bathe is automatically recovered as a special case. The results of some illustrative finite element solutions are given in order to demonstrate the capabilities of the algorithm. | |
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Internacional
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Si |
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Nombre congreso
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Sixth MIT Conference on Computational Fluid and Solid Mechanics |
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Tipo de participación
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960 |
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Lugar del congreso
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Boston, EEUU |
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Revisores
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ISBN o ISSN
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0045-7949 |
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DOI
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Fecha inicio congreso
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15/06/2011 |
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Fecha fin congreso
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17/06/2011 |
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Desde la página
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826 |
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Hasta la página
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843 |
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Título de las actas
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Computers & Structures Volume 89, Issues 11?12, June 2011 |