Smriti, A. K., Grossmann, A. and Steinmann, P. (2019) A thermoelastoplastic theory for special Cosserat rods. Mathematics and Mechanics of Solids, 24(3), pp. 686-700. (doi: 10.1177/1081286517754132)
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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.
| Item Type: | Articles |
|---|---|
| Additional Information: | This work was supported by the University Grants Commission of India for the Indo-German project (grant number 1-3/2016 (IC)), the DAAD exchange program “Multiscale Modeling, Simulation, and Optimization for Energy, Advanced Materials and Manufacturing,” and the Deutsche Forschungsgemeinschaft within the Cluster of Excellence “Engineering of Advanced Materials” (project EXC 315) (Bridge Funding). |
| Status: | Published |
| Refereed: | Yes |
| Glasgow Author(s) Enlighten ID: | Steinmann, Professor Paul |
| Authors: | Smriti, A. K., Grossmann, A., and Steinmann, P. |
| College/School: | College of Science and Engineering > School of Engineering > Infrastructure and Environment |
| Journal Name: | Mathematics and Mechanics of Solids |
| Publisher: | SAGE |
| ISSN: | 1081-2865 |
| ISSN (Online): | 1741-3028 |
| Published Online: | 12 February 2018 |
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