C. Boyer et al., DESIGN OF A COMPOSITE STRUCTURE TO ACHIEVE A SPECIFIED RELIABILITY LEVEL, Reliability engineering & systems safety, 56(3), 1997, pp. 273-283
Citations number
22
Categorie Soggetti
Operatione Research & Management Science","Engineering, Industrial
Safety factors are widely used in structural design. For composite mat
erial structures, however, the lack of experimental feed-back does not
allow the use of safety factors optimized from cost and reliability p
oint of view. Reliability methods are one way to achieve the calibrati
on of partial safety factors using a more rational method than judgeme
nt alone. First we present the calibration process. The reliability me
thods FORM, SORM, simulation, are initially applied to a laminate plat
e under uniform pressure. In this example, we compare three design cri
teria; the different reliability methods agree with the reference meth
od for all criteria used. We chose the Tsai-Hill criteria and the FORM
method to calculate safety factors. Then, a calibration process is un
dertaken on a composite pipe and this serves to illustrate the differe
nt steps in the calculation. Finally, we present a calibration of a ge
neral plate structure. The partial safety factors and their sensitivit
ies to the different parameters of the stochastic variables are given
according to load type. (C) 1997 Elsevier Science Limited.