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Publications du Laboratoire de Mécanique et d'Acoustique |  |
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Publications du Laboratoire de Mécanique et d'Acoustique | |
| HAL: hal-00462213, version 1 |
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| VI Meeting Unilateral Problems in Structural Analysis, Siracusa : Italie (2007) |
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| Experimental tests & theoretical model for strain localization and cyclic damage of polyurethane foam cylinders in uniaxial compression |
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| Giampiero Pampolini 1, 2 |
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| (2007) |
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| It has been observed by several authors that the deformation of polyurethane foams under uniaxial compression is not homogeneous. It has also been observed that, under cyclic deformation, a progressive stepping down of the loading curve (cyclic damage) takes place. The two phenomena can be described by coupling the model for strain-localization developed in [1], [2], with the rheological model for cyclic damage presented in [3]. In the strain-localization model, the foam is represented as a chain of non-linear elastic springs with non-convex strain energy, and the localization is interpreted as a progressive phase change. In the cyclic damage model, the foam is represented by a series of surface elements undergoing contact with recoverable adhesion. |
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| 1: | Laboratoire de Mécanique et d'Acoustique (LMA) |
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CNRS : UPR7051 |
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| 2: | Dipartimento di Ingegneria di Ferrara |
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Università degli studi di Ferrara |
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| Subject | : | Engineering Sciences/Mechanics/Mechanics of the solides Physics/Mechanics/Mechanics of the solides |
| hal-00462213, version 1 | |
| http://hal.archives-ouvertes.fr/hal-00462213 | |
| oai:hal.archives-ouvertes.fr:hal-00462213 | |
| From: Giampiero Pampolini | |
| Submitted on: Tuesday, 27 April 2010 11:25:42 | |
| Updated on: Tuesday, 27 April 2010 11:25:42 | |
