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X. Zhang, V.R. Voller, K.A. Stelson, M. Bhattacharya, X. Cheng and A. Sen

Department of Civil Engineering, University of Minnesota, Minneapolis, Minnesota, United States of America

doi:10.4203/ccp.65.10.7

X. Zhang, V.R. Voller, K.A. Stelson, M. Bhattacharya, X. Cheng, A. Sen, "An Approximate Model of Residual Stress in Injected Molded Parts", in B.H.V. Topping, (Editor), "Finite Elements: Techniques and Developments", Civil-Comp Press, Edinburgh, UK, pp 273-277, 2000. doi:10.4203/ccp.65.10.7

Abstract

A previously presented model of thermally induced residual stress in an injected moulded polymer part is presented. The solution of this model requires a coupled analysis of the transient thermal and elastic fields. The thermal problem, a phase change problem, is solved with an explicit enthalpy method. At each time step in this solution the predicted temperature profile is used in a numerical integration step of the stress equation. Results, the stress profile through the part thickness, indicate a low dependence on the ratio of latent heat to specific heat (L/C_p) and a high dependence on the Biot number. Residual stress predictions are also in close agreement with experimental measurements and predications from an approximate model.

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Front Page Browse CCP CSETS CTR IJRT Other Authors Search Purchase Guide FAQ Contact us	Civil-Comp Proceedings ISSN 1759-3433 CCP: 65 FINITE ELEMENTS: TECHNIQUES AND DEVELOPMENTS Edited by: B.H.V. Topping Paper X.7 An Approximate Model of Residual Stress in Injected Molded Parts X. Zhang, V.R. Voller, K.A. Stelson, M. Bhattacharya, X. Cheng and A. Sen Department of Civil Engineering, University of Minnesota, Minneapolis, Minnesota, United States of America doi:10.4203/ccp.65.10.7 purchase the full-text of this paper Full Bibliographic Reference for this paper X. Zhang, V.R. Voller, K.A. Stelson, M. Bhattacharya, X. Cheng, A. Sen, "An Approximate Model of Residual Stress in Injected Molded Parts", in B.H.V. Topping, (Editor), "Finite Elements: Techniques and Developments", Civil-Comp Press, Edinburgh, UK, pp 273-277, 2000. doi:10.4203/ccp.65.10.7 Abstract A previously presented model of thermally induced residual stress in an injected moulded polymer part is presented. The solution of this model requires a coupled analysis of the transient thermal and elastic fields. The thermal problem, a phase change problem, is solved with an explicit enthalpy method. At each time step in this solution the predicted temperature profile is used in a numerical integration step of the stress equation. Results, the stress profile through the part thickness, indicate a low dependence on the ratio of latent heat to specific heat (L/C_p) and a high dependence on the Biot number. Residual stress predictions are also in close agreement with experimental measurements and predications from an approximate model. purchase the full-text of this paper (price £20) go to the previous paper go to the next paper return to the table of contents return to the book description purchase this book (price £80 +P&P)
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