Approximate model of thermal residual stress in an injection molded part

X. Zhang; X. Cheng; K. A. Stelson; M. Bhattacharya; A. Sen; Vaughan R. Voller

doi:10.1080/01495730290074270

Approximate model of thermal residual stress in an injection molded part

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

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16 Scopus citations

Abstract

A description and model of the thermally induced residual stress that forms in a "platelike" injected molded polymer part is outlined. A linear heat balance integral (LHBI) temperature profile approximation and the concept of a virtual adjunct mold (VAM) is used to arrive at an approximate algebraic model that, upon providing material properties and processing conditions, gives an immediate evaluation of the residual stress through the plate thickness. Results obtained with this model are in very close agreement with a full numerical solution and agree closely with experimental measurements made on a range of starch-based biodegradable polymer samples.

Original language	English (US)
Pages (from-to)	523-538
Number of pages	16
Journal	Journal of Thermal Stresses
Volume	25
Issue number	6
DOIs	https://doi.org/10.1080/01495730290074270
State	Published - Jun 2002

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Copyright 2008 Elsevier B.V., All rights reserved.

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AU - Stelson, K. A.

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AU - Sen, A.

AU - Voller, Vaughan R.

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AB - A description and model of the thermally induced residual stress that forms in a "platelike" injected molded polymer part is outlined. A linear heat balance integral (LHBI) temperature profile approximation and the concept of a virtual adjunct mold (VAM) is used to arrive at an approximate algebraic model that, upon providing material properties and processing conditions, gives an immediate evaluation of the residual stress through the plate thickness. Results obtained with this model are in very close agreement with a full numerical solution and agree closely with experimental measurements made on a range of starch-based biodegradable polymer samples.

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Approximate model of thermal residual stress in an injection molded part

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