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Modeling of High Performance SMC Behavior ˸ Applications to 3D Compression Molding Simulation

Abstract : This work deals with the numerical simulation and modeling of thermomechanical analysis of fiber reinforcedcomposites materials. Specifically for SMC (Sheet Molding Compound) materials that are used in compression molding processes to build automotive high performance parts. The work is divided into fourchapters, firstly describing a fully coupled thermo-mechanical model for standard SMC materials and for innovative SMC with high fiber concentration (> 25% in volume). The SMC is treated as an incompressible mixtureof fibers and paste complemented by a compressible porosity phase. Its anisotropy is modeled by means of structural tensors. Kinetic of reaction and consolidation of the part is also modeled and studied. Mechanicaland thermal experimental data recorded on samples of SMC materials are compared to the model and numerical solution provided in this work. A numerical framework, we use the immersed boundary method and the level set method. We describe the compression molding process by proposing an unified anisotropic compressible resolution able to describe the transition between compressible/ incompressible of SMC materials under deformation. We are able to describe the mechanical response of the SMC and to predict locally the consolidation (curing) of thepart throughout the thermal cycle.
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Submitted on : Thursday, June 30, 2022 - 12:49:13 PM
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2017PSLEM079_archivage.pdf
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  • HAL Id : tel-03709976, version 1

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Luis Fernando Salazar Betancourt. Modeling of High Performance SMC Behavior ˸ Applications to 3D Compression Molding Simulation. Mechanics of materials [physics.class-ph]. Université Paris sciences et lettres, 2017. English. ⟨NNT : 2017PSLEM079⟩. ⟨tel-03709976⟩

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