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Optimization of Fiber Orientation Model Parameters in the Presence of Flow-Fiber Coupling

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J. Compos. Sci. 2018, 2(4), 73; https://doi.org/10.3390/jcs2040073
Received: 30 November 2018 / Revised: 12 December 2018 / Accepted: 17 December 2018 / Published: 18 December 2018
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Abstract

In this paper, we propose a novel systematic procedure to minimize the discrepancy between the numerically predicted and the experimentally measured fiber orientation results on an injection-molded part. Fiber orientation model parameters are optimized simultaneously using Latin hypercube sampling and kriging-based adaptive surrogate modeling techniques. Via an adequate discrepancy measure, the optimized solution possesses correct skin–shell–core structure and global orientation evolution throughout the considered center-gated disk. Some non-trivial interaction between these parameters and flow-fiber coupling effects as well as their quantitative importance are illustrated. The parametric fine-tuning of orientation models mostly leads to a better agreement in the skin and shell regions, while the coupling effect via a fiber-dependent viscosity improves prediction in the core. View Full-Text
Keywords: fiber reinforced plastics; fiber orientation; flow-fiber coupling; surrogate modeling; parametric optimization; injection molding simulation fiber reinforced plastics; fiber orientation; flow-fiber coupling; surrogate modeling; parametric optimization; injection molding simulation
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Li, T.; Luyé, J.-F. Optimization of Fiber Orientation Model Parameters in the Presence of Flow-Fiber Coupling. J. Compos. Sci. 2018, 2, 73.

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J. Compos. Sci. EISSN 2504-477X Published by MDPI AG, Basel, Switzerland RSS E-Mail Table of Contents Alert
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