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Descripción
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| In this paper we present a new computational framework for anisotropic elastoplasticity with mixed hardening which presents the following characteristics: (1) it is motivated by a one-dimensional rheological model where the main differences are due to geometric nonlinearities and three-dimensional effects; (2) it uses the Lee multiplicative decomposition; (3) it is valid for anisotropic yield functions; (4) it is valid for any anisotropic stored energy, either linear or nonlinear in logarithmic strains; (5) it is valid for (non-moderate) large elastic strains; (6) it results in a six-dimensional additive corrector update, parallel to that of the infinitesimal theory; (7) it does not explicitly employ plastic strain tensors or plastic metrics, circumventing definitely the ?rate issue?; (8) the incremental plastic flow is isochoric using a simple backward-Euler scheme, without explicitly using exponential mappings; (9) no hypothesis is needed for the plastic spin in order to integrate the symmetric flow derived from the dissipation equation; (10) the Mandel stress tensor plays no role in the formulation; (11) it yields a fully symmetric algorithmic linearization consistent with its associative nature and the principle of maximum dissipation; and (12) it recovers the formulation of Simó for isotropy as a particular case. | |
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Internacional
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JCR del ISI
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Si |
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Título de la revista
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Computer Methods in Applied Mechanics And Engineering |
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ISSN
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0045-7825 |
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Factor de impacto JCR
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3,467 |
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Información de impacto
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Volumen
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320 |
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DOI
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10.1016/j.cma.2017.02.027 |
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Número de revista
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Desde la página
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82 |
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Hasta la página
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121 |
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Mes
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Ranking
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