Constitutive equations
Constitutive equations for coupled flows in clay materials
... [ 4 ] In the present paper, we are interested in developing a simple and practical model for the coupled constitutive equations (coupled flows) in a saturated clay material. Our model is explicitly valid ...
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A Numerical Scheme for Time-Domain FE Analysis of Viscoelastic Structures with Fractional Derivative Constitutive Equations
... To cite this document: Deu, Jean-Francois and Matignon, Denis A Numerical Scheme for Time-Domain FE Analysis of Viscoelastic Structures with Fractional Derivative Constitutive Equations. (In Press: 2013) ...
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Tensor-train approximation of parametric constitutive equations in elasto-viscoplasticity
... realistic constitutive equations as well as less sophisticated elasto-viscoplastic models admit no tensor decomposition with respect to the material coe fficients and the time ...fferential equations ...
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On the numerical implementation of elasto-plastic constitutive equations for metal forming
... AND EQUATIONS During forming, metals undergo large transformations and their behavior is described by rate constitutive ...these equations in an appropriate orthogonal rotating ...resulting ...
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Implicit integration scheme for porous viscoplastic potential-based constitutive equations
... viscoplastic constitutive equations We introduce an internal state variable based unified viscoplastic model combined with a porous damage as first step for the viscoplastic-damage ...the ...
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Development of new constitutive equations for the Mullins effect in rubber using the network alteration theory
... L’archive ouverte pluridisciplinaire HAL, est destinée au dépôt et à la diffusion de documents scientifiques de niveau recherche, publiés ou non, émanant des établissements d’enseignemen[r] ...
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Constitutive equations for granular materials : application to dry sand and powder metal
... Most of the constitutive models for powder compaction need to specify a macroscopic yield surface and its evolution with relative density q in the stress space, together wi[r] ...
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Constitutive equations and numerical modelling of time effects in soft porous rocks
... References 1. Collin, F., Radu, J-P., Charlier, R.: First development of the mechanical model. PASACHALK – 1st periodic twelve-monthly progress report . (1998) 222 2. Collin, F., Delage, P., Schroeder, C., Charlier, R.: ...
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Inflation of elastomeric circular membranes using network constitutive equations
... elastomers or heat-softened plasti
s, the bubble in
ation te
hnique is widely used. In most of the ases, only experimental data obtained at the pole are onsidered to determine parameters of onstitutive equations, ...
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Constitutive equations and failure criteria for amorphous polymeric solids
... After crazing has initiated, our continuum model represents the transition from shear-flow to craze-flow by a change in the viscoplastic flow rule, in which the dil[r] ...
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Constitutive equations for hot working of aluminum alloy 6061
... In summary, the results of isothermal, constant strain rate compression tests are con- clusive and consistent. Strain hardening is not exhibited in the temperature and strain rate[r] ...
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Constitutive equations for superelasticity in crystalline shape-memory materials
... With this brief introduction, the purpose of this thesis is to formulate and nu- merically implement a crystal-mechanics-based constitutive model for shape-memory mate[r] ...
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Classical and statistical theories for the determination of constitutive equations.
... Since these methods of characterization of linear visco- elastic materials are well known, the remainder of this section will concentrate on the treatment and analys[r] ...
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Equations différentielles
... 1 Equations diff´erentielles 1.1 Introduction — d´efinitions g´en´erales Une ´equation diff´erentielle (ED) d’ordre n est une ´equation faisant intervenir une fonction y ainsi que ses d´eriv´ees y (k) jusqu’`a ...
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Dendriform Equations
... integral equations, ...linear equations above may be interpreted as first order cases with respect to the parameter ...introduce equations of arbitrary order in λ and show by transforming the higher ...
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Equations et inéquations
... Les solutions sont les abscisses des points de la courbe situés au-dessus (ou sur)de l'axe des abscisses. Les solutions sont les abscisses des points de la courbe C situés au-dessus ([r] ...
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equations fonctions
... Dans le tableau suivant, on a accolé dans chaque cas, le dégradé des valeurs de la fonction f ( ) x au dégradé linéaire initial des valeurs de x dans [0 ;1].[r] ...
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Constitutive modeling of chalk. Application to waterflooding
... 2 CONSTITUTIVE MODELS Experiments performed on chalk samples have shown two plastic mechanisms: the pore collapse for high mean stresses (contractant behaviour) and the frictional failure for low mean ...
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