Hysteresis in a system driven by either generalized force or displacement variables

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We report on experiments aimed at comparing the hysteretic response of a Cu-Zn-Al single crystal undergoing a martensitic transition under strain-driven and stress-driven conditions. Strain-driven experiments were performed using a conventional tensile machine while a special device was designed to perform stress-driven experiments. Significant differences in the hysteresis loops were found. The strain-driven curves show re-entrant behaviour (yield point) which is not observed in the stress-driven case. The dissipated energy in the stress-driven curves is larger than in the strain-driven ones. Results from recently proposed models qualitatively agree with experiments.
5 pages, 5 figures

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Materials Science, Disordered Systems and Neural Networks

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http://salesiana.dossiersoluciones.com/handle/123456789/136350

Consulte el texto completo en el siguiente enlace:

https://arxiv.org/abs/cond-mat/0702211
 http://arxiv.org/abs/cond-mat/0702211
 Phys. Rev. B 76, 064105 (2007)

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arXiv