Validation of material model for polypropylene (PP)
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
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.
ntnudaim:7326, MTBYGG Bygg- og miljøteknikk, Beregningsmekanikk
IdentifiersURN: urn:nbn:no:ntnu:diva-18517Local ID: ntnudaim:7326OAI: oai:DiVA.org:ntnu-18517DiVA: diva2:566004
Clausen, Arild Holm, ProfessorAndersen, Marius