Abstract
Most of the current numerical solutions for injection molding were based on the Hele-Shaw approximation: two-dimensional flow analysis based on a shell model. In some cases, this approximation causes significant errors due to the loss of geometrical information as well as simplification of the flow characteristics in the thickness direction. The present work covers three-dimensional flow simulation and deformation analyses of injection-molded plastic parts through fully three-dimensional solid analysis. The limitation of the conventional shell-based approach is studied in a theoretical manner, and verified through the flow simulation of a speaker grill. A numerical scheme is proposed for the deformation analysis of injection-molded parts. The validity of the proposed approach will be investigated through analyses of several numerical examples with experimental verification.
| Original language | English |
|---|---|
| Pages (from-to) | 1569-1585 |
| Number of pages | 17 |
| Journal | Polymer - Plastics Technology and Engineering |
| Volume | 43 |
| Issue number | 5 |
| DOIs | |
| State | Published - 2004 |
Keywords
- Deformation analysis
- Finite element analysis
- Flow simulation
- Injection molding
- Residual stress
- Solid element