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An incremental 2D constitutive model accounting for linear viscoelasticity and damage development in short fibre composites
Luleå tekniska universitet, Institutionen för teknikvetenskap och matematik, Materialvetenskap.ORCID-id: 0000-0001-9649-8621
Volvo, Göteborg.
2005 (engelsk)Inngår i: International Journal for Numerical Methods in Engineering, ISSN 0029-5981, E-ISSN 1097-0207, Vol. 64, nr 11, s. 1509-1528Artikkel i tidsskrift (Fagfellevurdert) 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.

sted, utgiver, år, opplag, sider
2005. Vol. 64, nr 11, s. 1509-1528
HSV kategori
Forskningsprogram
Polymera konstruktionsmaterial
Identifikatorer
URN: urn:nbn:se:ltu:diva-15952DOI: 10.1002/nme.1411ISI: 000233478400005Scopus ID: 2-s2.0-28144459322Lokal ID: f87afb40-a569-11db-9811-000ea68e967bOAI: oai:DiVA.org:ltu-15952DiVA, id: diva2:988928
Merknad
Validerad; 2005; 20070116 (ysko)Tilgjengelig fra: 2016-09-29 Laget: 2016-09-29 Sist oppdatert: 2018-07-10bibliografisk kontrollert

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