TY - CHAP
T1 - Fracture Assessment of Reactor Circuit (FRAS)
T2 - Advanced numerical fracture assessment methods
AU - Laukkanen, Anssi
AU - Kuutti, Juha
AU - Andersson, Tom
AU - Karjalainen-Roikonen, Päivi
PY - 2011
Y1 - 2011
N2 - The increase in computational capacity has made numerical
analyses an indispensable tool in fracture mechanics.
Many commercial structure analysis codes have implemented
fracture mechanics routines easily available to the
end-user. Traditional fracture mechanics analyses can now
be carried out with relative ease and research in this
field is focused on crack growth simulation methods and
more detailed numerical material fracture mechanism
modelling. Various numerical fracture assessment methods
have been researched and applied during the course of the
FRAS project. The cohesive zone modelling approach and
crack tip remeshing approach are presented with numerical
examples. The abilities of the extended finite element
method for assessment of non-rectilinear crack
propagation are demonstrated for a mixed-mode type of a
crack analysis. Progress in modelling of effects of
irradiation to ductile to brittle transition fracture
toughness is presented. Research carried out in the
project shows that the methods can be applied to model
failure in nuclear applications but determining model
parameters is essential in obtaining reliable results.
AB - The increase in computational capacity has made numerical
analyses an indispensable tool in fracture mechanics.
Many commercial structure analysis codes have implemented
fracture mechanics routines easily available to the
end-user. Traditional fracture mechanics analyses can now
be carried out with relative ease and research in this
field is focused on crack growth simulation methods and
more detailed numerical material fracture mechanism
modelling. Various numerical fracture assessment methods
have been researched and applied during the course of the
FRAS project. The cohesive zone modelling approach and
crack tip remeshing approach are presented with numerical
examples. The abilities of the extended finite element
method for assessment of non-rectilinear crack
propagation are demonstrated for a mixed-mode type of a
crack analysis. Progress in modelling of effects of
irradiation to ductile to brittle transition fracture
toughness is presented. Research carried out in the
project shows that the methods can be applied to model
failure in nuclear applications but determining model
parameters is essential in obtaining reliable results.
KW - ProperTune
UR - http://www.scopus.com/inward/record.url?scp=80052861797&partnerID=8YFLogxK
M3 - Chapter or book article
SN - 978-951-38-7689-0
T3 - VTT Tiedotteita - Research Notes
SP - 430
EP - 439
BT - SAFIR2010
PB - VTT Technical Research Centre of Finland
CY - Espoo
ER -