A thermoelastoplastic theory for special Cosserat rods

Smriti , Kumar A, Großmann A, Steinmann P (2019)

Publication Type: Journal article

Publication year: 2019


Book Volume: 24

Pages Range: 686-700

Journal Issue: 3

DOI: 10.1177/1081286517754132


A general framework is presented to model coupled thermoelastoplastic deformations in the theory of special Cosserat rods. The use of the one-dimensional form of the energy balance in conjunction with the one-dimensional entropy balance allows us to obtain an additional equation for the evolution of a temperature-like one-dimensional field variable, together with constitutive relations for this theory. Reduction to the case of thermoelasticity leads us to the well-known nonlinear theory of thermoelasticity for special Cosserat rods. Later on, additive decomposition is used to separate the thermoelastic part of the strain measures of the rod from their plastic counterparts. We then present the most general quadratic form of the Helmholtz energy per unit undeformed length for both hemitropic and transversely isotropic rods. We also propose a prototype yield criterion in terms of forces, moments, and hardening stress resultants, as well as associative flow rules for the evolution of plastic strain measures and hardening variables.

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Smriti, ., Kumar, A., Großmann, A., & Steinmann, P. (2019). A thermoelastoplastic theory for special Cosserat rods. Mathematics and Mechanics of Solids, 24(3), 686-700. https://doi.org/10.1177/1081286517754132


Smriti, , et al. "A thermoelastoplastic theory for special Cosserat rods." Mathematics and Mechanics of Solids 24.3 (2019): 686-700.

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