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Mechanical response of thermoset polymers under high compressive loads, 2
Royal Institute of Technology, Fibre & Polymer Technology, Stockholm.
Luleå University of Technology, Department of Engineering Sciences and Mathematics, Material Science.ORCID iD: 0000-0001-9649-8621
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2005 (English)In: Macromolecular materials and engineering (Print), ISSN 1438-7492, E-ISSN 1439-2054, Vol. 290, no 11, p. 1073-1082Article in journal (Refereed) Published
Abstract [en]

A nonlinear viscoelastic material model was used to describe the experimental behaviour of thin vinyl ester specimens subjected to compression in thickness direction. The stress-dependent material functions in the model were found in creep and strain recovery tests on thick cylindrical specimens. The elastic and creep response of thin thermoset polymer specimens subjected to compressive loads was simulated while varying the geometry of the test set samples. The calculated increase in the apparent elastic modulus and decrease of the creep-strain rate due to reduced thickness-to-width ratio is in a good qualitative correlation with experimental results for corresponding geometries. The constraint due to friction and interaction with the material outside the loaded surface area were identified as the cause for high apparent stiffness, which converges with decreasing thickness to an asymptotic value dependent on the modulus and Poisson's ratio of the material.

Place, publisher, year, edition, pages
2005. Vol. 290, no 11, p. 1073-1082
National Category
Composite Science and Engineering
Research subject
Polymeric Composite Materials
Identifiers
URN: urn:nbn:se:ltu:diva-9986DOI: 10.1002/mame.200500156ISI: 000233523600004Scopus ID: 2-s2.0-28844454043Local ID: 8b982160-e812-11db-b9a9-000ea68e967bOAI: oai:DiVA.org:ltu-9986DiVA, id: diva2:982925
Note
Validerad; 2005; 20061107 (ysko)Available from: 2016-09-29 Created: 2016-09-29 Last updated: 2018-07-10Bibliographically approved

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Nordin, Lars-OlofMarklund, ErikVarna, Janis

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