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Validation of material model for polypropylene (PP)
Norwegian University of Science and Technology, Faculty of Engineering Science and Technology, Department of Structural Engineering.
2012 (English)MasteroppgaveStudent thesis
Abstract [en]

Polymers are the up and coming engineering material. The number of possible applications is increasing fast and so is the need for a good polymer material model. The scientists at SIMLab at NTNU have developed such a material model. In this thesis is the material model calibrated to represent an impact modified polypropylene used by Toyota. The validation started with the calibration. A review of the theoretical background of the material model and a detailed explanation of the calibration procedure are given to describe the derivation of the calibrated material model. The model is then applied in FEsimulations of the material tests and the two validation tests. The first validation test is a quasi-static tension test using a specimen with a centric hole. This test resembles the material tests but the centric hole makes the load response slightly more complex. The other test is an impact test using a drop tower. This test validates the material models ability to represent dynamic problems and also tests the representation of the strain rate dependency. The material model proves that it is capable of representing all the tests in this thesis quite accurately.

Place, publisher, year, edition, pages
Institutt for konstruksjonsteknikk , 2012. , 173 p.
Keyword [no]
ntnudaim:7326, MTBYGG Bygg- og miljøteknikk, Beregningsmekanikk
URN: urn:nbn:no:ntnu:diva-18517Local ID: ntnudaim:7326OAI: diva2:566004
Available from: 2012-11-08 Created: 2012-11-08

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