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Modelling of residual stresses and warpage in sandwich injection moulding
Luleå University of Technology, Department of Engineering Sciences and Mathematics, Fluid and Experimental Mechanics.ORCID iD: 0000-0002-1033-0244
Chalmers University of Technology.
2003 (English)In: International polymer processing, ISSN 0930-777X, E-ISSN 2195-8602, Vol. 18, no 1, p. 95-106Article in journal (Refereed) Published
Abstract [en]

Sandwich injection moulding offers the possibility of combining materials with different properties and, for instance, hide a recycled constituent within a virgin ditto. This attractive potential puts great demands on the manufacturing and therefore also on the process modelling. In particular the effect on the final stress state and the deformation of the part due to the heterogeneity of the material must be clarified. This topic is addressed in this study. To start with it is confirmed that expressions for the temperature field can be much simplified without major loss of accuracy in the solution. This enables us to take an analytical approach to the modelling and the resulting equations can be solved on a spread-sheet or with a simple code. It is also shown that the derived models compare well to experiments made with a two-layered structure, indicating that the models presented can be used to estimate changes of processing conditions or material properties for sandwich structures.

Place, publisher, year, edition, pages
2003. Vol. 18, no 1, p. 95-106
National Category
Fluid Mechanics and Acoustics
Research subject
Fluid Mechanics
Identifiers
URN: urn:nbn:se:ltu:diva-9610Local ID: 84445c70-9cc3-11db-8975-000ea68e967bOAI: oai:DiVA.org:ltu-9610DiVA, id: diva2:982548
Note
Validerad; 2003; 20070105 (ysko)Available from: 2016-09-29 Created: 2016-09-29 Last updated: 2017-11-24Bibliographically approved

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http://www.polymer-process.com/directlink.asp?IPP1726

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Lundström, Staffan

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