000013440 001__ 13440
000013440 005__ 20161114165554.0
000013440 04107 $$aeng
000013440 046__ $$k2011-05-25
000013440 100__ $$aValdebenito, M.
000013440 24500 $$aReliability Sensitivity of Linear Dynamical Systems Subject to Gaussian Excitation

000013440 24630 $$n3.$$pComputational Methods in Structural Dynamics and Earhquake Engineering
000013440 260__ $$bNational Technical University of Athens, 2011
000013440 506__ $$arestricted
000013440 520__ $$2eng$$aProbability theory offers an appropriate framework for quantifying the level of safety of a structural system. Thus, it is possible to evaluate the chances that a structure fulfills prescribed performance criteria during its lifetime due to uncertainties in loadings, deterioration processes, etc. The aforementioned chances are usually termed as the reliability associated with a structure. Although reliability constitutes a fundamental metric of safety, knowledge on the sensitivity of the reliability with respect to variables such as material properties, cross section of structural members, etc. is also of paramount importance. The information on reliability sensitivity is most valuable as it allows, for example, taking decisions on the final design of a structure such that its level of safety is relatively invariant in case unexpected changes occur. Within the aforementioned framework, this contribution presents a novel approach for estimating the reliability sensitivity of a particular type of structures, namely linear structural systems subject to dynamic loading modeled as a Gaussian stochastic process. The sensitivity is computed with respect to deterministic variables that affect the structural performance (such as stiffness, cross section of structural members, etc.). The proposed approach is based on an efficient simulation technique and local approximations of the functions used to model the structural performance. The reliability measure is expressed in terms of the first excursion probability, which is a criterion widely used in stochastic structural dynamics. In addition, the error associated with the estimator of the reliability sensitivity is computed by means of the Bootstrap method.

000013440 540__ $$aText je chráněný podle autorského zákona č. 121/2000 Sb.
000013440 653__ $$aReliability, Sensitivity Analysis, Gaussian Stochastic Process, First Excursion Probability.

000013440 7112_ $$aCOMPDYN 2011 - 3rd International Thematic Conference$$cIsland of Corfu (GR)$$d2011-05-25 / 2011-05-28$$gCOMPDYN2011
000013440 720__ $$aValdebenito, M.$$iJensen, H.$$iSchueller, G.$$iCaro, F.
000013440 8560_ $$ffischerc@itam.cas.cz
000013440 8564_ $$s280622$$uhttps://invenio.itam.cas.cz/record/13440/files/108.pdf$$yOriginal version of the author's contribution as presented on CD, section: MS 21 Reliability of Structural and Mechanical Systems for Uncertain Operating Conditions.
000013440 962__ $$r13401
000013440 980__ $$aPAPER