HAL (Le Centre pour la Communication Scientifique Directe) · 1994 · 50 citations · 0 references
Natural SciencesMaterials EngineeringMaterials ScienceComputational Materials ScienceComputational MechanicsMechanical Behavior Of MaterialsDeformation MechanismsElastic DeformationElasticity TheoryPlastic DeformationPlasticityStress-strain BehaviorElastoplasticityInhomogeneous ElasticityLaplace TransformLinearizationPlastic Deformation SimulationViscoplastic Constitutive ModelingViscoplastic DeformationViscoplasticity Modeling
A truly self-consistent scheme for modelling the elastic-viscoplastic behaviour of polycrystals has, at variance with previous attempts, to preserve the elastic-viscoplastic nature of intergranular accommodation. A treatment which obeys this requirement is presented here : thanks to a tangent linearization procedure along the load path and to the use of the Laplace-Carson transform method, the problem considered is converted into a symbolically inhomogeneous elastic one with eigenstrains, which has a known classical solution.