Transactions of the Korean Society of Mechanical Engineers A (대한기계학회논문집A)
- Volume 24 Issue 8 Serial No. 179
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- Pages.1968-1799
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- 2000
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- 1226-4873(pISSN)
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- 2288-5226(eISSN)
DOI QR Code
Warpage Analysis of Fiber Reinforced Injection Molded Parts
단섬유 보강 이방성 사출성형품의 휨 해석
- Chung, Seong-Taek ;
- Kim, Jin-Gon ;
- Koo, Bon-Heung (VM Tech)
- Published : 2000.08.01
Abstract
A warpage analysis program has been developed for fiber-reinforced injection molded parts. The warpage is predicted from the residual stress and anisotropic thermo-mechanical properties coupled with fiber orientation in the integrated injection molding simulation. A simple elastic model is used for the calculation of thermally and pressure-induced residual stresses which are employed as the initial conditions in the structural analysis. To improve the reliability of warpage analysis, a new triangular flat shell element superimposing well-known efficient plate bending and membrane element is presented. The numerical examples address the necessity to use anisotropic models for fiber-reinforced materials and show that predicted warpage is in good agreement with experimentally measured one.
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