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arXiv · 2403.09396

A device for studying elementary plasticity fluctuations in granular media

Ambroise Mathey·Mickaël Le Fur·Patrick Chasle·Axelle Amon·Jérôme Crassous
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Abstract

In this manuscript, we describe a scientific device specifically designed for the study of the plasticity fluctuations preceding the fracture of granular media. Biaxial tests on model granular media are performed using a commercial uniaxial loading system. Strain field fluctuations are measured using a method based on the interference of coherent light scattered by the sample. We show that such a device enables discrete plasticity events to be unambiguously evidenced. Moreover, those discrete plasticity fluctuations depend only on the imposed strain, and not on the strain rate.

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Ambroise Mathey, Mickaël Le Fur, Patrick Chasle, Axelle Amon, Jérôme Crassous. 2024-03-14. A device for studying elementary plasticity fluctuations in granular media. https://arxiv.org/abs/2403.09396

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