Welcome to the new version of CaltechAUTHORS. Login is currently restricted to library staff. If you notice any issues, please email coda@library.caltech.edu
Published March 1, 2010 | metadata_only
Journal Article

Study and validation of a variational theory of thermo-mechanical coupling in finite visco-plasticity


We present an experimental validation of the variational theory of thermo-mechanical coupling of Yang et al. (2006) in the case of finite thermo-visco-plasticity. The variational theory results in precise predictions of the rate of heating due to dissipation and does not require an a priori definition or model of a fraction of plastic work converted to heat. We show that the predicted heat-to-plastic work ratios are in good agreement with experimental observations for 2024-T3 aluminum, α-titanium and pure polycrystalline tantalum, including their evolution with strain and their dependence on strain-rate. We also critically compare the variational theory to other theories and models in the literature.

Additional Information

© 2009 Elsevier Ltd. Received 6 October 2008; revised 16 November 2009. Available online 24 November 2009. The authors gratefully acknowledge the support of the Department of Energy through Caltech's ASCI/ASAP Center for Simulating the Dynamic Response of Materials. L.S. is a Research Associate at the Fonds de la Recherche Scientifique – FNRS.

Additional details

August 21, 2023
August 21, 2023