Abstract
In this study, distribution and history of residual stresses in plaque-like geometries are simulated based on linear thermoviscoelastic model, which helps to understand the mechanics and evolution of the residual stresses in the injection molding process. The numerical calculation of direction, combined with the specified boundary conditions. Results show that the stress variation across the thickness exhibits a high surface tensile value changing to a compressive peak value close to the surface, with the core region experiencing a parabolic tensile peak. Residual stress distribution throughout the thickness is almost same along the flowpath and the final residual stresses value near the gate is lower than the value near the end of flowpath.
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References
W.C. Bushko, V.K. Stokes, Solidification of thermoviscoelastic melts. Part I: Formulation of model problem. Polymer Engineering and Science, 35(4), 351–364 (1995)
W.C. Bushko, V.K. Stokes, Solidification of thermoviscoelastic melts. Part II: Effects of processing conditions on shrinkage and residual stresses. Polym. Eng. Sci., 35(4), 365–383 (1995)
K.M.B. Jansen, G. Titomanlio, Effect of pressure history on shrinkage and residual stresses-injection molding with constrained shrinkage. Polym. Eng. Sci., 36(15), 2029–2040 (1996)
G. Titomanlio, K.M.B. Jansen, In-mold shrinkage and stress prediction in injection molding. Polym. Eng. Sci., 36(15) 2041–2049 (1996)
M.R. Kamal, R.A. Lai-Fook, J.R. Hernandez-Aguilar, Residual thermal stresses in injection moldings of thermoplastics: A theoretical and experimental study. Polym. Eng. Sci., 42(5) 1098–1114 (2002)
W.F. Zoetelief, L.F.A. Douven, Residual thermal stresses in injection molded products. Polym. Eng. Sci., 36(14) 1886–1896 (1996)
J.D. Ferry, Viscoelastic properties of polymers, 3rd Ed. (John Wiley & Sons, New York, 1980)
K.K. Kabanemi, H. Vaillancourt, H. Wang, G. Salloum, Residual stresses, shrinkage, and warpage of complex injection molded products: Numerical simulation and experimental validation. Polymer Engineering and Science, 38(1) 21–37 (1998)
X. Chen, Y.C. Lam, D.Q. Li, Analysis of thermal residual stress in plastic injection molding. Journal of Materials Processing Technology, 101(1) 275–280 (2000)
H.M. Zhou, D.Q. Li, A Numerical Simulation of the Filling Stage in Injection Molding Based on a Surface Model. Advances in Polymer Technology, 20(2) 125–131 (2001)
S.B. Cui, H.M. Zhou, D.Q. Li Numerical Simulation of Injection Molding Cooling Process Based on 3D Surface Model. Computer Aided Drafting, Design and Manufacturing, 14(2) 64–70 (2004)
Acknowledgment
The authors would like to acknowledge financial support from the National Natural Science Foundation Council of the People’s Republic of China (Grant No. 20490224, 50675080).
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Zhou, H., Xi, G. & Liu, F. Residual Stress Simulation of Injection Molding. J. of Materi Eng and Perform 17, 422–427 (2008). https://doi.org/10.1007/s11665-007-9156-6
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DOI: https://doi.org/10.1007/s11665-007-9156-6