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      Flow-Fiber Coupled Viscosity in Injection Molding Simulations of Short Fiber Reinforced Thermoplastics

      , 1 , * , 1

      International Polymer Processing

      Carl Hanser Verlag

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          Abstract

          The main objective of this paper is to numerically investigate the use of fiber-dependent viscosity models in injection molding simulations of short fiber reinforced thermoplastics with latest commercial software. We propose to use the homogenization-based anisotropic rheological model to take into account flow-fiber coupling effects. The 4th-order viscosity tensor is approximated by an optimal scalar model and then implemented in the Moldflow Insight API framework. Numerical simulations are performed for a test-case rectangular plate with three fiber orientation models. The resulting coupled flow kinematics and fiber evolutions are then compared to the standard uncoupled simulations. Interpretations are given based on detailed post-processing of the field results. Certain deformation conditions are expected to be better taken into account, which may also in return lead to an improved fiber orientation prediction. Preliminary confrontation between flow-fiber coupled simulations and existing experimental data is then presented at the end of the paper.

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          Most cited references 27

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          Anisotropic fluids

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            The Use of Tensors to Describe and Predict Fiber Orientation in Short Fiber Composites

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              Orientation Behavior of Fibers in Concentrated Suspensions

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                Author and article information

                Journal
                ipp
                International Polymer Processing
                Carl Hanser Verlag
                0930-777X
                2195-8602
                29 April 2019
                : 34
                : 2
                : 158-171
                Affiliations
                1 Promold, Paris, France
                Author notes
                [* ] Correspondence address, Mail address: Tianyi Li, Promold, 42 rue Boursault, 75017 Paris, France, E-mail: tianyikillua@ 123456gmail.com
                Article
                IPP3706
                10.3139/217.3706
                © 2019, Carl Hanser Verlag, Munich
                Page count
                References: 34, Pages: 14
                Product
                Self URI (journal page): http://www.hanser-elibrary.com/loi/ipp
                Categories
                Regular Contributed Articles

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