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arXiv · 1808.05757

Thermodynamic dislocation theory: Size effect in torsion

Khanh Chau Le·Yinguang Piao
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Abstract

The thermodynamic dislocation theory developed for non-uniform plastic deformations is used here for the analysis of twisted copper wires. With a small set of physical parameters that we expect to be independent of strain rate and temperature, we can simulate the torque-twist curves that match the experimental ones of Liu et al. (2012). It is shown that the size effect results from the accumulation and pile-up of excess dislocations.

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Khanh Chau Le, Yinguang Piao. 2018-08-16. Thermodynamic dislocation theory: Size effect in torsion. https://arxiv.org/abs/1808.05757

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