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Erschienen in:
2014 | OriginalPaper | Buchkapitel
Return-Mapping and Consistent Tangent Modulus Tensor
verfasst von : Koichi Hashiguchi
Erschienen in: Elastoplasticity Theory
Verlag: Springer Berlin Heidelberg
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Constitutive equations of irreversible deformation, e.g. elastoplastic, viscoelastic and viscoplastic deformations are described in rate forms in which the stress rate and the strain rate are related to each other through the tangent modulus. Therefore, numerical calculations are executed in their incremental forms by the input of load (stress) increment or displacement (deformation) increment, while the time increment is also input in rate-(or time-)dependent constitutive equations, e.g. viscoelastic and viscoplastic ones.