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Issue 7, 2019
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Tailoring relaxation dynamics and mechanical memory of crumpled materials by friction and ductility

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Abstract

Crumpled sheets show slow mechanical relaxation and long lasting memory of previous mechanical states. By using uniaxial compression tests, the role of friction and ductility on the stress relaxation dynamics of crumpled systems is investigated. We find a material dependent relaxation constant that can be tuned by changing ductility and adhesive properties of the sheet. After a two-step compression protocol, nonmonotonic aging is reported for polymeric, elastomeric and metal sheets, with relaxation dynamics that are dependent on the material's properties. These findings can contribute to tailoring and programming of crumpled materials to get desirable mechanical properties.

Graphical abstract: Tailoring relaxation dynamics and mechanical memory of crumpled materials by friction and ductility

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Publication details

The article was received on 24 Sep 2018, accepted on 15 Jan 2019 and first published on 15 Jan 2019


Article type: Paper
DOI: 10.1039/C8SM01951G
Soft Matter, 2019,15, 1633-1639

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    Tailoring relaxation dynamics and mechanical memory of crumpled materials by friction and ductility

    E. van Bruggen, E. van der Linden and M. Habibi, Soft Matter, 2019, 15, 1633
    DOI: 10.1039/C8SM01951G

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