Modeling the nonlinear PMMA behavior near glass transition temperature: application to its thermoforming

P. Gilormini (1) , Luc Chevalier (2) , G. Régnier (1)

1 LIM - Laboratoire d'Ingénierie des Matériaux
2 MSME - Laboratoire de Modélisation et Simulation Multi Echelle

Using suitable constitutive equations, numerical simulation allows predicting the properties of transparencies that are thermoformed near their glass transition temperature. Such equations are presented, which describe the nonlinear viscoelastic behavior of poly(methyl methacrylate) at large deformations near glass transition. The simulation of the thermoforming of a transparency at constant and uniform temperature is performed and compared with experimental results.

Domaines: Mécanique des matériaux [physics.class-ph]; Mécanique des matériaux [physics.class-ph]

P. Gilormini, Luc Chevalier, G. Régnier. Modeling the nonlinear PMMA behavior near glass transition temperature: application to its thermoforming. International Conference on Advances in Materials and Processing Technologies (AMPT2010), Oct 2010, Paris, France. pp. 179-184, ⟨10.1063/1.3552437⟩. ⟨hal-00782472⟩