Article ID Journal Published Year Pages File Type
279080 International Journal of Solids and Structures 2010 11 Pages PDF
Abstract

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.

Related Topics
Physical Sciences and Engineering Engineering Civil and Structural Engineering
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