3D modelling of plane-strain fracture toughness tests using ansys wokbench
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Typ
Examensarbete för masterexamen
Program
Publicerad
2020
Författare
Wester, Filip
Gunnarsson, Eric
Modellbyggare
Tidskriftstitel
ISSN
Volymtitel
Utgivare
Sammanfattning
This thesis shows the possibilities of modeling and recreating the fracture toughness
test E399 using available test data. It also adds to the conclusion that for a excessive
amount of plasticity the 95% secant can not be used to derive KIC as the crack has
not propagated at that point. Further it has been shown that for limited amount
of plasticity the J-integral can be used to calculate the linear elastic stress intensity
factor. The thesis also discusses the validity of adding friction between the specimen
and the pin to increase the stiffness in the simulation to match the test data and
compare this approach to other methods. Finally, ways of using FE modelling to
get information from invalid tests are discussed.