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Memory in nonmonotonic stress relaxation of a granular system

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arxiv 1911.01560 v2 pith:MZAI4DT3 submitted 2019-11-05 cond-mat.soft

Kieran A. Murphy , Jonathon W. Kruppe , Heinrich M. Jaeger This is my paper · ORCID
classification cond-mat.soft
keywords memoryrelaxationelementsgranularstresssystemadditionalanomalous
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We demonstrate experimentally that a granular packing of glass spheres is capable of storing memory of multiple strain states in the dynamic process of stress relaxation. Modeling the system as a non-interacting population of relaxing elements, we find that the functional form of the predicted relaxation requires a quantitative correction which grows in severity with each additional memory and is suggestive of interactions between elements. Our findings have implications for the broad class of soft matter systems that display memory and anomalous relaxation.

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Cited by 1 Pith paper

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  1. Anomalous Shear Stress Growth During Relaxation of a Soft Glass

    cond-mat.soft 2025-06 conditional novelty 6.0 of 10

    After a small strain step, soft glassy fluids such as Carbopol and foam can show a temporary stress rise before relaxing, and a simple elastoplastic model with power-law yielding reproduces this memory effect.

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