Gas Assisted Injection Molding of an Industrial Part: 3D Simulation Provides Virtual Molding Trials
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A. Polynkin
Abstract
Techniques developed for three-dimensional simulation of gas assisted injection molding of thermoplastics are here extended to a complex industrial application, a car door handle, providing uniquely detailed insights into the molding process. Handling of the three stages of the process – plastic filling, and primary and secondary gas penetration – is described in terms of the boundary and initial conditions applied. Predictions for plastic filling patterns are compared successfully with molding results, and provide detailed forewarning of potential problems due to weld surfaces and air-traps. Particular emphasis is placed on accurate modeling of secondary gas penetration, which is also validated against practical results. A further novel feature is the export of an STL model of the gas core, providing a CAD model of the finished molding for subsequent in-service analysis.
Acknowledgements
The work described formed part of a project supported by the EPSRC, UK with Grant no. GR/M39510, and by Cinpres Gas Injection Ltd.
References
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© 2007 Walter de Gruyter GmbH, Berlin/Boston, Germany
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Articles in the same Issue
- Contents
- Regular Contributed Articles
- Functionalization of Low Density Polyethylene with Ricinol-2-oxazoline Methyl Maleate in a Twin-screw Extruder
- Modelling of Phase Transitions and Residual Thermal Stress of CTBN Rubber Modified Epoxy Resins during a Pultrusion Process
- Real-time Diagnosis of Micro Powder Injection Molding Using Integrated Ultrasonic Sensors
- Rheological Behavior of HEUR Mixtures in Aqueous Media
- Spinnability and Dyeability for Copolymer/Nano-SiO2 Fiber of Glycol and 1,2-Propanediol with PTA
- Development of a Novel Transcription Molding Process to Fabricate Sophisticated Polymer Products with Precise Microstructure and High Transparency Applicable to Display Devices and Bio-chips
- Effect of Aspect Ratio of Whisker on the Fibrillation of Liquid Crystalline Polymer in Polysulfone Matrix
- Gas Assisted Injection Molding of an Industrial Part: 3D Simulation Provides Virtual Molding Trials
- Analysis of Film Blowing with Flow-enhanced Crystallization
- Analysis of Film Blowing with Flow-enhanced Crystallization
- A Composite Model for Melting, Pressure and Fill Factor Profiles in a Metered Fed Closely Intermeshing Counter-rotating Twin Screw Extruder
- Surface Defects of TPO Injected Foam Parts for Automotive Applications
- PPS News
- PPS News
- Seikei-Kakou Abstracts
- Seikei-Kakou Abstracts
