Journal ArticleDOI
Kinematic hardening in large strain plasticity
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In this paper, a finite strain hyper elasto-plastic constitutive model capable of describing non-linear kinematic hardening as well as nonlinear isotropic hardening is presented.Abstract:
A finite strain hyper elasto-plastic constitutive model capable to describe non-linear kinematic hardening as well as nonlinear isotropic hardening is presented. In addition to the intermediate configuration and in order to model kinematic hardening, an additional configuration is introduced - the center configuration; both configurations are chosen to be isoclinic. The yield condition is formulated in terms of the Mandel stress and a back-stress with a structure similar to the Mandel stress. It is shown that the non-dissipative part of the plastic velocity gradient not governed by the thermodynamical framework and the corresponding quantity associated with the kinematic hardening influence the material behaviour to a large extent when kinematic hardening is present. However, for isotropic elasticity and isotropic hardening plasticity it is shown that the non-dissipative quantities have no influence upon the stress-strain relation. As an example, kinematic hardening von Mises plasticity is considered, which fulfils the plastic incompressibility condition and is independent of the hydrostatic pressure. To evaluate the response and to examine the influence of the non-dissipative quantities, simple shear is considered; no stress oscillations occur. (Less)read more
Citations
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A framework for multiplicative elastoplasticity with kinematic hardening coupled to anisotropic damage
TL;DR: In this paper, a phenomenological framework is proposed to capture anisotropic geometrically nonlinear inelasticity, in particular the coupling of viscoplasticity with continuum damage whereby both, proportional and kinematic hardening are taken into account.
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Computational modeling of inelastic large ratcheting strains
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Comparison of isotropic hardening and kinematic hardening in thermoplasticity
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A crystal plasticity model that incorporates stresses and strains due to slip gradients
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TL;DR: In this article, a constitutive model for the elastoplastic behavior of crystalline materials is proposed to incorporate the kinematic and stress effects of excess dislocations.
Journal ArticleDOI
Deformation gradient based kinematic hardening model
Mathias Wallin,Matti Ristinmaa +1 more
TL;DR: In this article, a kinematic hardening model applicable to finite strains is presented, which is based on the residual stresses that evolve due to different obstacles that are present in a polycrystalline material, such as grain boundaries, cross slips, etc.
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
Thermodynamics with Internal State Variables
TL;DR: In this paper, the authors study the thermodynamics of nonlinear materials with internal state variables whose temporal evolution is governed by ordinary differential equations, and employ a method developed by Coleman and Noll to find the general restrictions which the Clausius-Duhem inequality places on response functions.
Journal ArticleDOI
Time-independent constitutive theories for cyclic plasticity
TL;DR: In this paper, three different approaches are considered for the description of kinematic behavior: (i) the use of independent multi-yield surfaces, (ii) models with two surfaces only, (iii) the so-called "nonlinear-kinematic hardening rule" defined by a differential equation.
Journal ArticleDOI
Variational and projection methods for the volume constraint in finite deformation elasto-plasticity
TL;DR: In this article, a local multiplicative split of the deformation gradient into volume-preserving and dilatational parts is proposed, without relying on rate forms of the weak form of momentum balance.
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