| Publication type: |
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Article in peer-reviewed journal |
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| Subject: |
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| Title: |
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Un modèle viscoélastique pour la réponse des mousses polymériques à la compression cyclique |
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| Author(s): |
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Gianpietro Del Piero 1, Giampiero Pampolini ( ) 2, 3 |
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| Laboratory: |
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| Abstract: |
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A block of polyurethane foam subject to cyclic compression exhibits a softening phenomenon as the number of cycles increases. In particular, one observes a stepping down of the loading curves while the unloading curves remain the same. In tests performed by the authors, it has been observed a partial recovery of the initial stiffness after a resting period. Indeed, this behaviour can be described as a long memory effect. We propose a viscoelastic model, coupling a non convex energy with a dissipation of viscous type. The model is in a good qualitative agreement with the experiments. |
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| Fulltext language: |
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French |
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| Journal: |
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Mécanique & Industries |
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| Audience: |
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international |
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| Publication date: |
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2009 |
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| Volume: |
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10 |
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| Issue: |
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3-4 |
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| Page, identifiant, ...: |
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261-266 |
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