Extension Method and Numerical Simulation of Micro-Injection Molding

Shen, Yung Kang; Shie, Y.; Wu, Wei

doi:10.1016/s0735-1933(04)00066-1

Cited by 13 publications

(5 citation statements)

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“…It is well known that FEA models are widely used to simulate replication processes on a macroscale and, in the last two decades, significant advances in this field have been reported. Also, some attempts were made to apply such models for simulating injection moulding of microparts and features [4,22], and good correlation between actual process behaviour and simulation results was reported [23].…”

Section: Simulation Modelsmentioning

confidence: 99%

The finite element analysis of melt flow behaviour in micro-injection moulding

Griffiths

Dimov²,

Brousseau³

et al. 2008

Proceedings of the Institution of Mechanical Engineers, Part B:

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Micro-injection moulding as a replication method is one of the key technologies for micromanufacture. The understanding of process constraints for a selected production route is essential both at the design stage and during mass production. In this research, an existing finite element analysis system is used to verify the effects of four process parameters: the melt and mould temperatures, injection speed, and part thickness. Special attention is paid to the melt flow sensitivity when filling microchannels, particularly the factors affecting the shear rate, pressure, and temperature. In particular, the simulation model was used to investigate the flow behaviour of two polymer materials, polypropylene and acrylonitrile butadiene styrene, by varying the process parameters. Then, the results of this investigation were compared with those reported in an experimental study. Conclusions are made about the accuracy and sensitivity of the proposed simulation model.

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Section: Simulation Modelsmentioning

confidence: 99%

The finite element analysis of melt flow behaviour in micro-injection moulding

Griffiths

Dimov²,

Brousseau³

et al. 2008

Proceedings of the Institution of Mechanical Engineers, Part B:

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show abstract

“…This approach reached widespread acceptance and gave rise to well-known and successful commercial packages [3,4], which have been used not only in the industrial environment, but also in some research settings [5,6]. In academia, the Hele-Shaw approximation still instigated discussions, such as recent works on the mathematical modeling itself [7], rheological aspects [8], gas-assisted injection molding [9], and mold-filling optimization [10,11].…”

Section: Introductionmentioning

confidence: 99%

Polymer Melt Flow in Plane Channels: Effects of the Viscous Dissipation and Axial Heat Conduction

Zdanski

Vaz

2006

Numerical Heat Transfer, Part A: Applications

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The plastic transforming industry has shown considerable growth in the last years. In this context, commercial simulators have been developed, some of which combine simplified mathematical models with rheological properties of commercial polymers. In spite of the successes, these approximations are not able to capture important details of the flow behavior. The present work addresses some aspects of the polymer melt flow in plane channels using a more elaborate mathematical formulation based on the full momentum and energy conservation laws. The physical equations are discretized using finite differences based on a collocated mesh and second-order spatial accuracy formulas. Solutions featuring the development of hydrodynamic and thermal boundary layers are presented for a commercial polymer.

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“…Compared to traditional injection molding, the products of the micro-injection molding is smaller; the factors affect the injection process change significantly. Many scholars studied the micro-injection [3][4][5][6] . However, the current situation is that the micro injection molding technology is not perfect in basic theory; the technology is still not mature [7] .…”

Section: Introductionmentioning

confidence: 99%

Simulation of Injection Molding of Ultra-Thin Light Guide Plate with Hemispherical Microstructures

Dong

Zhao

et al. 2012

KEM

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Micro injection molding is used widely owing to its high accuracy, high production efficiency, low cost and can fabricate products with complex structures. For optical components, the residual stress is a main element for quality. In this research, the light guide plate is used as the study object. The light guide plate was designed by software Pro-E, and was simulated by Moldflow for filling process. Orthogonal method was used in this research. The most important factor that affects residual stress level is mold temperature. The level of the different process parameters on residual stress are mold temperature, packing time, packing pressure and melt temperature.

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Extension Method and Numerical Simulation of Micro-Injection Molding

Cited by 13 publications

References 0 publications

The finite element analysis of melt flow behaviour in micro-injection moulding

The finite element analysis of melt flow behaviour in micro-injection moulding

Polymer Melt Flow in Plane Channels: Effects of the Viscous Dissipation and Axial Heat Conduction

Simulation of Injection Molding of Ultra-Thin Light Guide Plate with Hemispherical Microstructures

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