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Flow-fiber coupled injection molding simulations with non-uniform fiber concentration effects

Abstract : We propose to account for non-uniform fiber concentration effects in a novel fiber-flow coupled injection molding simulation framework. The rheological properties of fiber suspensions are characterized by an optimal scalar viscosity defined by a minimization principle. Comprehensive theoretical analyses are carried out to gain further physical insights into this approximate orientation-dependent model. The flow-induced fiber orientation and migration are numerically computed and then injected into the constitutive equation at every time-step. Based on careful post-processing of the obtained kinematics and fiber evolution, simulation results on a center-gated disk suggest a stronger coupling behavior due to a spatially-varying concentration. This multiphysics coupling leads to a further improvement in terms of fiber orientation prediction compared with experimental results.
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Submitted on : Tuesday, December 18, 2018 - 9:54:57 AM
Last modification on : Wednesday, January 9, 2019 - 1:55:42 PM
Long-term archiving on: : Tuesday, March 19, 2019 - 4:51:13 PM


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  • HAL Id : hal-01958510, version 1


Tianyi Li, Jean-François Luyé. Flow-fiber coupled injection molding simulations with non-uniform fiber concentration effects. 2018. ⟨hal-01958510⟩



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