TY - RPRT
T1 - Model Correction Factor Method
T2 - Report based on Ph.D.-thesis (supervisor: Ove Ditlevsen)
AU - Christensen, Claus
AU - Randrup-Thomsen, Søren
AU - Morsing Johannesen, Johannes
PY - 1997
Y1 - 1997
N2 - The model correction factor method is proposed as an alternative
to traditional polynomial based response surface techniques in
structural reliability considering a computationally time
consuming limit state procedure as a 'black box'. The class of
polynomial functions is replaced by a limit statebased on an
idealized mechanical model to be adapted to the original limit
state by the model correction factor. Reliable approximations are
obtained by iterative use of gradient information on the original
limit state function analogously to previous response surface
approaches. However, the strength of the model correction factor
method, is that in simpler form not using gradient information on
the original limit state function or only using this information
once, a drastic reduction of the number of limit state evaluation
is obtained together with good approximations on the reliability.
Methods for solving convergence in especially difficult cases are
proposed.
AB - The model correction factor method is proposed as an alternative
to traditional polynomial based response surface techniques in
structural reliability considering a computationally time
consuming limit state procedure as a 'black box'. The class of
polynomial functions is replaced by a limit statebased on an
idealized mechanical model to be adapted to the original limit
state by the model correction factor. Reliable approximations are
obtained by iterative use of gradient information on the original
limit state function analogously to previous response surface
approaches. However, the strength of the model correction factor
method, is that in simpler form not using gradient information on
the original limit state function or only using this information
once, a drastic reduction of the number of limit state evaluation
is obtained together with good approximations on the reliability.
Methods for solving convergence in especially difficult cases are
proposed.
M3 - Report
BT - Model Correction Factor Method
ER -