2006 | OriginalPaper | Buchkapitel
18. Continuum Constitutive Modeling
verfasst von : Shoji Imatani
Erschienen in: Springer Handbook of Materials Measurement Methods
Verlag: Springer Berlin Heidelberg
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Abstract
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Starting from viscoplasticity models, model performance is reviewed in order to predict the mechanical response under creep–plasticity interaction conditions, taking into account internal state variables.
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Material anisotropy is discussed; mathematical modeling of initial anisotropy and induced anisotropy based on the representation theorem for higher order isotropic tensors is presented.
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Thermomechanical coupling phenomena involving phase transformations predominate in engineering applications of heat treatment and material processing. A continuum model is presented that takes into account the way structural rearrangement evolves in materials.
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Finally, microscopic analysis based on crystal plasticity, which relates the resolved shear stress to crystal slip, is applied to describe the inhomogeneous deformation process in polycrystalline materials.