Journal ArticleDOI
On modelling the elasto-viscoplastic response of metals using polycrystal plasticity
E.B. Marin,Paul R. Dawson +1 more
TLDR
In this paper, a constitutive framework for the elasto-viscoplastic response of metals that utilizes polycrystal plasticity is presented together with a corresponding numerical integration procedure, where single crystal equations are written in an intermediate configuration obtained by elastically unloading the deformed crystal without rotation from the current configuration to a stress-free state.About:
This article is published in Computer Methods in Applied Mechanics and Engineering.The article was published on 1998-11-02. It has received 187 citations till now. The article focuses on the topics: Constitutive equation & Plasticity.read more
Citations
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Plastic anisotropy and the role of non-basal slip in magnesium alloy AZ31B
Sean R. Agnew,Ozgur Duygulu +1 more
TL;DR: In this paper, a combination of experimental and simulation techniques were used to investigate the plastic behavior of wrought magnesium alloy and found that an increased activity of non-basal dislocations provides a self-consistent explanation for the observed changes in the anisotropy with increasing temperature.
Journal ArticleDOI
Large-scale 3D random polycrystals for the finite element method: Generation, meshing and remeshing
TL;DR: Vonoi tessellations are used and are shown to include morphological properties that make them particularly challenging to mesh with high element quality, and the results are mainly illustrated by the high-quality meshing of polycrystals with large number of grains.
Journal ArticleDOI
Modeling the evolution of crystallographic dislocation density in crystal plasticity
TL;DR: In this paper, the authors propose a dislocation density state variables evolve from initial conditions according to equations based on fundamental concepts in dislocation mechanics such as the conservation of Burgers vector in multiplication and annihilation processes.
Journal ArticleDOI
On the evolution of crystallographic dislocation density in non-homogeneously deforming crystals
TL;DR: In this paper, a set of evolution equations for dislocation density was developed incorporating the combined evolution of statistically stored and geometrically necessary densities, and the statistical density evolves through Burgers vector-conserving reactions based in dislocation mechanics.
Journal ArticleDOI
Strength and plasticity of nanolaminated materials
TL;DR: In this paper, the deformation mechanisms of a variety of metal-based nanolaminates are reviewed with emphasis on unusual mechanical properties such as ultra-high flow strength without loss of plastic deformability.
References
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Journal ArticleDOI
Elastic-Plastic Deformation at Finite Strains
TL;DR: In this paper, the authors generalize a previous theory to permit arbitrary deformation histories by considering two coupled thermodynamic systems: one comprising thermo- elasticity at finite strain and the other the irreversible process of dissipation and absorption of plastic work.
Journal ArticleDOI
Overview no. 42 Texture development and strain hardening in rate dependent polycrystals
R.J. Asaro,Alan Needleman +1 more
TL;DR: In this article, a rate dependent constitutive model is developed for polycrystals subjected to arbitrarily large strains, and the model is used to predict deformation textures and large-strain strain hardening behavior following various stressstrain histories for single phase f.c. aggregates that deform by crystallographic slip.
Journal ArticleDOI
Material rate dependence and localized deformation in crystalline solids
TL;DR: In this paper, a planar double slip model was proposed to analyze the effect of material rate sensitivity on the formation of conjugate slip bands in planar planar crystal geometries.
Journal ArticleDOI
Crystallographic texture evolution in bulk deformation processing of FCC metals
TL;DR: A Taylor-type polycrystalline model, together with a new fully-implicit timeintegration scheme has been developed and implemented in a finite element program to simulate the evolution of crystallographic texture during bulk deformation processing of face centered cubic metals deforming by crystallographic slip as mentioned in this paper.