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Loi physique de comportement des polymères amorphes et intégration dans un code éléments finis

Abstract : A set of physical based constitutive equations is developped for amorphous polymeric materials based on molecular mobility concepts. The proposed model allows a coherent description of the non linear viscoelasto-viscoplastic behavior from small to large strains aera. A set of materials parameters were depicted for the BisphenolA polycarbonate from Lexan. The constitutive equation is implemented in the finite element package abaqus, consisting in the writing of a umat file.
The whole mechanical response under various sollicitation conditions was evaluated from the load displacement curve and correctly described by the model. Localization phenomena resulting in strain heterogeneity are also well predicted by the calculations.
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https://tel.archives-ouvertes.fr/tel-00103408
Contributor : Renaud Rinaldi <>
Submitted on : Wednesday, October 4, 2006 - 12:27:07 PM
Last modification on : Wednesday, July 8, 2020 - 12:42:32 PM
Long-term archiving on: : Tuesday, April 6, 2010 - 6:03:06 PM

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  • HAL Id : tel-00103408, version 1

Citation

R.G. Rinaldi. Loi physique de comportement des polymères amorphes et intégration dans un code éléments finis. Mécanique [physics.med-ph]. INSA de Lyon, 2006. Français. ⟨tel-00103408⟩

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