Proceedings of the KSME Conference (대한기계학회:학술대회논문집)
- 2000.04a
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- Pages.745-750
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- 2000
Integrated CAE Analysis to Predict Warpage of Fiber Reinforced Injection Molded Parts
단섬유 보강 사출성형품의 휨 예측을 위한 통합 CAE 해석
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 neccesity 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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