000005006 001__ 5006
000005006 005__ 20141120140003.0
000005006 04107 $$aeng
000005006 046__ $$k2008-06-25
000005006 100__ $$aBourinet, J.-M.
000005006 24500 $$aFORM SENSITIVITIES TO CORRELATION: APPLICATION TO FATIGUE CRACK PROPAGATION BASED ON VIRKLER DATA

000005006 24630 $$n4.$$pProceedings of the 4th International ASRANet Colloquium
000005006 260__ $$bASRANet Ltd., 2008
000005006 506__ $$arestricted
000005006 520__ $$2eng$$aSensitivities are important information in a structural reliability analysis. They help in quantifying the role of various input parameters in the failure probability and make therefore the basis of any sound structural reliability analysis. This paper addresses the sensitivities to correlation between random variables, which are rarely studied in the structural reliability field except in a very few references, see e.g. reference [1]. The methodology for deriving these sensitivities is detailed in the first part of this paper, based on accurate solutions obtained by numerical integration of Nataf model-derived equations. These quantities are obtained as standard by-products of the FORM analysis, without extra calls to the structural model. The methodology has been validated over some reference examples. It is then applied to stochastic crack growth fatigue in the second part of the paper, for which a high sensitivity of the failure probability to correlation between parameters of the Paris-Erdogan equation has been observed. The examples investigated in this second part illustrate the strong role correlation could have on reliability results and they also points out the important effects which could result from neglecting some slight bias between the structural model and reference experimental data.

000005006 540__ $$aText je chráněný podle autorského zákona č. 121/2000 Sb.
000005006 653__ $$a

000005006 7112_ $$a4th International ASRANet Colloquium$$cAthens (GR)$$d2008-06-25 / 2008-06-27$$gASRANet4
000005006 720__ $$aBourinet, J.-M.$$iLemaire, M.
000005006 8560_ $$ffischerc@itam.cas.cz
000005006 8564_ $$s278622$$uhttps://invenio.itam.cas.cz/record/5006/files/045_Bourinet,_Jean-Marc.pdf$$yOriginal version of the author's contribution as presented on CD, paper No. 45.
000005006 962__ $$r4967
000005006 980__ $$aPAPER