Simulation of thermoplastic prepreg thermoforming based on a visco-hyperelastic model and a thermal homogenization. (5th March 2016)

• Record Type: Journal Article
• Authors: Guzman-Maldonado, E.; Hamila, N.; Naouar, N.; Moulin, G.; Boisse, P.
• Is Part Of: Materials & design. Volume 93(2016)
• Page Start: 431
• Page End: 442
• Publication Date: 2016-03-05
• Subjects: Prepreg -- Thermoplastic resin -- Forming -- Thermomechanical -- Viscoelasticity -- Finite element analysis; Materials -- Periodicals; Engineering design -- Periodicals; Matériaux -- Périodiques; Conception technique -- Périodiques; Electronic journals; 620.11
• DOI: 10.1016/j.matdes.2015.12.166
• Languages: English
• ISSNs: 0264-1275

Abstract

Abstract: The simulation of thermoplastic prepreg forming is achieved by alternating thermal and forming analyses. The thermal properties are obtained from a mesoscopic analysis and a homogenization procedure. The forming simulation is based on a viscous-hyperelastic approach. The thermal simulations define the coefficients of the mechanical model that depends on the temperature. The forming simulations modify the boundary conditions and the internal geometry of the thermal analyses. The comparison of the simulation with an experimental thermoforming of a part representative of automotive applications shows the efficiency of the approach. Graphical abstract: Highlights: Thermoplastic prepreg forming is simulated by alternate thermal and forming analyses. The thermal conductivities are determined by mesoscopic analyses and homogenization. The viscous-hyperelastic model uses the convolution integrals. The thermoforming of an industrial part is realized both by experiments and simulation. The simulation of the thermoforming of an industrial part is compared to experiments.