A thermoelastoplastic theory for special Cosserat rods
Smriti , Kumar A, Großmann A, Steinmann P (2019)
Publication Type: Journal article
Publication year: 2019
Journal
Book Volume: 24
Pages Range: 686-700
Journal Issue: 3
Abstract
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.
Authors with CRIS profile
Alexander Großmann
Lehrstuhl für Technische Mechanik
Paul Steinmann
Lehrstuhl für Technische Mechanik
Involved external institutions
India (IN)How to cite
APA:
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://dx.doi.org/10.1177/1081286517754132
MLA:
Smriti, , et al. "A thermoelastoplastic theory for special Cosserat rods." Mathematics and Mechanics of Solids 24.3 (2019): 686-700.
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