The effect of extensional viscosity on the core structure of fiber orientation for injection-molded fiber composites
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Huan-Chang Tseng
Abstract
The famous informed isotropic (IISO) viscosity successfully dominates the broader core structure of fiber orientation distributions for injection-molded long fiber composites, due to the flow-fiber coupling effect of stretching deformation. Recently, the GNF-X (Generalized Newtonian Fluid eXtended) constitutive equation of weighted shear/extensional viscosity has been shown to possess the potential to demonstrate the extension-induced corner vortex in the entry flow of a polymer melt. Using GNF-X, three-dimensional injection-molding flow simulations of a center-gated disk are, therefore, performed for verifying the effect of extensional viscosity on the core structure of fiber orientation, namely, the extension-induced fiber orientation. The equivalent of GNF-X and IISO is demonstrated for predicting fiber orientation distribution, while their primary parameter relationship is particularly found herein. It is significant to visualize dramatic patterns of extensional rate occurring in the center-gated disk simulation.
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Author contributions: All the authors have accepted responsibility for the entire content of this submitted manuscript and approved submission.
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Research funding: None declared.
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Conflict of interest statement: The authors declare no conflicts of interest regarding this article.
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Articles in the same Issue
- Frontmatter
- Research Articles
- Mechanical and dielectric properties of Cissus Quadrangularis fiber-reinforced epoxy/TiB2 hybrid composites
- Numerical investigation of pressure drop within isothermal capillary rheometry for viscous and viscoelastic fluids
- The effect of extensional viscosity on the core structure of fiber orientation for injection-molded fiber composites
- Numerical analysis of a new mound-shaped extensional mixing element designed based on a sine curve in single-screw extrusion
- Effects of polymeric microcapsules on self-healing composites reinforced with carbon fibers: a comparative study
- Vulcanization kinetics and mechanical properties of filled ethylene-vinyl acetate copolymer rubber composites
- Experimental analysis of localized hybridization by means of adding woven polyester strip
- Molecular design of soluble poly(amide-imide) with high char yield for flame retardant epoxy resin
- Investigation of erosion wear performance and mechanism of mold materials
Articles in the same Issue
- Frontmatter
- Research Articles
- Mechanical and dielectric properties of Cissus Quadrangularis fiber-reinforced epoxy/TiB2 hybrid composites
- Numerical investigation of pressure drop within isothermal capillary rheometry for viscous and viscoelastic fluids
- The effect of extensional viscosity on the core structure of fiber orientation for injection-molded fiber composites
- Numerical analysis of a new mound-shaped extensional mixing element designed based on a sine curve in single-screw extrusion
- Effects of polymeric microcapsules on self-healing composites reinforced with carbon fibers: a comparative study
- Vulcanization kinetics and mechanical properties of filled ethylene-vinyl acetate copolymer rubber composites
- Experimental analysis of localized hybridization by means of adding woven polyester strip
- Molecular design of soluble poly(amide-imide) with high char yield for flame retardant epoxy resin
- Investigation of erosion wear performance and mechanism of mold materials
