A Study on Flow Simulation and Deformation Analysis for Injection-Molded Plastic Parts Using Three-Dimensional Solid Elements

2005 ◽  
Vol 43 (5) ◽  
pp. 1569-1585 ◽  
Author(s):  
Keun Park
Keyword(s):  
Three Dimensional ◽  
Flow Simulation ◽  
Deformation Analysis ◽  
Injection Molded ◽  
Plastic Parts ◽  
Injection Molded Plastic

Design for Injection Molding: Using Dimensional Analysis to Assess Fillability

1994 ◽  
Author(s):  
Douglas C. Mehl ◽  
Kurt A. Beiter ◽  
Kos Ishii
Keyword(s):  
Dimensional Analysis ◽  
Process Simulation ◽  
Design Guidelines ◽  
Experimental Program ◽  
Flow Length ◽  
Numerical Process ◽  
Injection Molded ◽  
Plastic Parts ◽  
Injection Molded Plastic

Abstract This paper addresses the determination of wall thicknesses and gating schemes in the preliminary design of injection-molded plastic parts. Today, most of the existing design guidelines come in the form of experience-based qualitative rules. If the designers already have a detailed geometry of the part, the numerical process simulation program provides another form of design aid. There exists a huge gap between these two types of design aids; the experience-based guidelines are often too vague, while the process simulation programs come too late to impact preliminary part design. To fill this gap, this paper develops physics-based guidelines that utilize dimensional analysis techniques. Experiments and simulation studies can deduce non-dimensional relationships between flow length, thickness, material, and process parameters. The guidelines will aid plastic component designers in determining wall-thickness, gating schemes, and in selecting the material in the preliminary stages of part design. This paper describes the formulation of the non-dimensional charts for fillability assessment, and explains the use of these charts in part design. We further outline an ongoing experimental program to validate and refine our formulation.

The Deformation Analysis and Optimization of the Injection Molded Parts Based on the Moldflow and Minitab Software

2013 ◽  
Vol 753-755 ◽  
pp. 1180-1183 ◽  
Author(s):  
Na Li ◽  
Hong Bin Liu ◽  
Hai Tao Wu
Keyword(s):  
Injection Molding ◽  
Process Parameters ◽  
Optimization Design ◽  
Deformation Analysis ◽  
Molded Parts ◽  
Injection Molded ◽  
The Common ◽  
Plastic Parts ◽  
Cae Technology

The deformation seriously affects the quality of the products, which is one of the common defects of plastic parts in the injection molding. Factorial design and CAE technology was used to study the product's warping rate influence in this paper. The minimum warping rate was obtained through the Minitab software and the optimized process parameters are verified with the Moldflow software. Experimental results show that the optimization design is effective and the warpage of the product is reduced.

Rapid Design of Injection Molding of Plastic Buckle

2014 ◽  
Vol 602-605 ◽  
pp. 69-72
Author(s):  
Ren Xing Li ◽  
Ze Wang ◽  
Dong Mei Su ◽  
Xia Ye ◽  
Ya Ni Xu ◽  
...  
Keyword(s):  
Three Dimensional ◽  
Design Parameters ◽  
Optimized Design ◽  
Assembly Model ◽  
Cloud Data ◽  
Feature Lines ◽  
Injection Molded ◽  
Design Software ◽  
Injection Molded Plastic ◽  
Surface Generate

In order to achieve higher speed and better efficiency of the plastic buckle molding, Imageware, the reverse design software, was adopted in this paper to process the point cloud data of the plastic buckle, mesh feature lines and reconstruct the surface,and then the reconstructed plastic buckle model was imported into UG and saved in STL format with the powerful surface repair function of UG to suture discontinuous surfaces. Mold Wizards of UG, the mold design module, was used to create mold assembly model, design parting surface, generate three-dimensional solid model of molding parts according to STL format saved previously and eventually the injection-molded plastic buckle was analyzed with Moldflow / MPI. As was indicated, the optimized design parameters tally with the experimental results basically.

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