Numerical Simulation of the Flow and Fiber Orientation in Reinforced Thermoplastic Injection Molded Products
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K. K. Kabanemi
Abstract
This paper describes a fully three-dimensional transient finite element method for calculating the flow behavior and fiber orientation during filling of injection molded parts. The fiber-fiber interaction is taken into account. The momentum and continuity equations are first solved with the viscoelastic stress treated as a fixed body force. The kinetic equation for the orientation tensor is then integrated with known kinematics using the standard Galerkin method. The calculation is performed on a time-dependent flow domain. Since the method is truly three-dimensional, singular regions such as the flow front or near injection gates and solid boundaries, where decoupled approximations are not valid, are naturally dealt with. The material anisotropy behavior is modeled by using the Doi-Doraiswamy-Metzner model. Numerical results, involving the Poiseuille flow and the filling of an end-gated plate, emphasizing the importance of the three-dimensional coupling calculations between the flow and orientation are presented.
© 1997, Carl Hanser Verlag, Munich
Artikel in diesem Heft
- Contents
- Contents
- Editorial
- Third in a Series: Pioneers of Polymer Processing: Charles Goodyear
- Screw Extrusion/Mixing
- Chaotic Features of Flow in Polymer Processing Equipment-Relevance to Distributive Mixing
- Influence of Design on Mixing Efficiency in a Variable Intermeshing Clearance Mixer
- Simulation of Non-Isothermal Flow in a Modular Buss Kneader and Comparison with Experiment
- Rheological Behaviour of LLDPE/LDPE Blends under Elongational Deformation
- Effect of Compounding Conditions on Mechanical Properties of Glass Fiber-Reinforced Polyamide-6
- Die Extrusion
- A New Approach to Simulation of Die Flow which Incorporates the Extruder and Rotating Screw Tips in the Analysis
- New Aspects Concerning the Design of Coathanger Dies
- Film
- On-Line Birefringence Measurement in Film Blowing of a Linear Low Density Polyethylene
- Brittle Melt Rupture Phenomena in Polymer Processing
- Moulding
- Injection Molding of LDPE/BaSO4 Blends
- An Experimental Study of Rotational Molding of Polypropylene/Polyethylene Copolymers
- Determination of the Inter-Relationships Between Processing Conditions and Properties of an Injection Molded Silicone Ring Using an Experimental Design
- Numerical Simulation of the Flow and Fiber Orientation in Reinforced Thermoplastic Injection Molded Products
- Wide-Angle X-Ray, Densitometric and Microscopical Studies on Injection Molded Polypropylene Disks
Artikel in diesem Heft
- Contents
- Contents
- Editorial
- Third in a Series: Pioneers of Polymer Processing: Charles Goodyear
- Screw Extrusion/Mixing
- Chaotic Features of Flow in Polymer Processing Equipment-Relevance to Distributive Mixing
- Influence of Design on Mixing Efficiency in a Variable Intermeshing Clearance Mixer
- Simulation of Non-Isothermal Flow in a Modular Buss Kneader and Comparison with Experiment
- Rheological Behaviour of LLDPE/LDPE Blends under Elongational Deformation
- Effect of Compounding Conditions on Mechanical Properties of Glass Fiber-Reinforced Polyamide-6
- Die Extrusion
- A New Approach to Simulation of Die Flow which Incorporates the Extruder and Rotating Screw Tips in the Analysis
- New Aspects Concerning the Design of Coathanger Dies
- Film
- On-Line Birefringence Measurement in Film Blowing of a Linear Low Density Polyethylene
- Brittle Melt Rupture Phenomena in Polymer Processing
- Moulding
- Injection Molding of LDPE/BaSO4 Blends
- An Experimental Study of Rotational Molding of Polypropylene/Polyethylene Copolymers
- Determination of the Inter-Relationships Between Processing Conditions and Properties of an Injection Molded Silicone Ring Using an Experimental Design
- Numerical Simulation of the Flow and Fiber Orientation in Reinforced Thermoplastic Injection Molded Products
- Wide-Angle X-Ray, Densitometric and Microscopical Studies on Injection Molded Polypropylene Disks
