On stress rate and plasticity constitutive equations referred to a body-fixed coordinate system |
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| Authors: | Han-Chin Wu |
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| Affiliation: | Department of Civil and Environmental Engineering, The University of Iowa, Iowa City, IA, USA |
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| Abstract: | Investigators have viewed the stress rate in two different ways: the material (body-fixed) point of view and the Eulerian point of view. We discuss the Zaremba–Jaumann rate and Oldroyd’s rate from the material viewpoint and apply them to the material formulation of a theory of plasticity for materials undergoing anisotropic plastic deformation. Significant advantages of the material formulation are that the derivation of equations is straight forward, the distortion of yield surface can be easily accounted for, and the issue of self-consistent elastic equation does not arise. |
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| Keywords: | Stress-rate Finite plastic strain Material formulation Body-fixed coordinate Convected material element Yield surface |
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