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An incremental 2D constitutive model accounting for linear viscoelasticity and damage development in short fibre composites
Luleå University of Technology, Department of Engineering Sciences and Mathematics, Material Science.ORCID iD: 0000-0001-9649-8621
Volvo, Göteborg.
2005 (English)In: International Journal for Numerical Methods in Engineering, ISSN 0029-5981, E-ISSN 1097-0207, Vol. 64, no 11, p. 1509-1528Article in journal (Refereed) Published
Abstract [en]

A model accounting for linear viscoelasticity and microdamage evolution in short fibre composites is described. An incremental 2D formulation suitable for FE-simulation is derived and implemented in FE-solver ABAQUS. The implemented subroutine allows for simulation close to the final failure of the material. The formulation and subroutine is validated with analytical results and experimental data in a tensile test with constant strain rate using sheet moulding compound composites. FE-simulation of a four-point bending test is performed using shell elements. The result is compared with linear elastic solution and test data using a plot of maximum surface strain in compression and tension versus applied force. The model accounts for damage evolution due to tensile loading and neglects any damage evolution in compression, where the material has higher strength. Simulation and test results are in very good agreement regarding the slope of the load-strain curve and the slope change.

Place, publisher, year, edition, pages
2005. Vol. 64, no 11, p. 1509-1528
National Category
Composite Science and Engineering
Research subject
Polymeric Composite Materials
Identifiers
URN: urn:nbn:se:ltu:diva-15952DOI: 10.1002/nme.1411ISI: 000233478400005Scopus ID: 2-s2.0-28144459322Local ID: f87afb40-a569-11db-9811-000ea68e967bOAI: oai:DiVA.org:ltu-15952DiVA, id: diva2:988928
Note
Validerad; 2005; 20070116 (ysko)Available from: 2016-09-29 Created: 2016-09-29 Last updated: 2018-07-10Bibliographically approved

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Varna, Janis

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