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Modélisation du comportement d'un bicouche (élastique - viscoélastique) sous l'effet du retrait dans la couche viscoélastique

Abstract : This paper presents a modelling of the bending of a reinforced double-layer floor. The first layer is made of a solid glass reinforced material with a linear elastic behaviour. The second layer is a PVC-based "plastic" layer whose behaviour is viscoelastic. The instability of the structure is caused by the shrinkage induced in the viscoelastic layer after manufacture. The model used is the Multiphasic Multilayer Material Model called "M4 model". It provides an alternate modelling of the multilayer structures respect to the two main currents, namely the two-dimensional and three-dimensional currents. An analytical solution including a reduced numerical cost is proposed. The behaviour of the viscoelastic layer is identified with a Zener model. The different characteristics of the model are determined based on the series of a simple experimental tests inspired by the actual behaviour of the material. The problem to be solved is therefore the evolution with the time of the geometry of this two-layer material (Elastic - Viscoelastic), as well as the influence of each parameter on this evolution.
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Hiam El Housseini. Modélisation du comportement d'un bicouche (élastique - viscoélastique) sous l'effet du retrait dans la couche viscoélastique. Mécanique [physics.med-ph]. Ecole Nationale des Ponts et Chaussées, 1994. Français. ⟨tel-00523173⟩

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