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

Research output: Contribution to journalArticlepeer-review

16 Scopus citations


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 languageEnglish (US)
Pages (from-to)523-538
Number of pages16
JournalJournal of Thermal Stresses
Issue number6
StatePublished - Jun 2002

Bibliographical note

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


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