000005007 001__ 5007
000005007 005__ 20141120140003.0
000005007 04107 $$aeng
000005007 046__ $$k2008-06-25
000005007 100__ $$aPerros, K.
000005007 24500 $$aRELIABILITY OF PIECEWISE LINEAR SYSTEMS SUBJECT TO STOCHASTIC EXCITATIONS

000005007 24630 $$n4.$$pProceedings of the 4th International ASRANet Colloquium
000005007 260__ $$bASRANet Ltd., 2008
000005007 506__ $$arestricted
000005007 520__ $$2eng$$aThis work investigates the reliability of nonlinear elastic and inelastic systems arising in mechanical and civil engineering applications due to impacts between structural parts. These systems are modeled by single and multi-degree of freedom models with piecewise linear elastic stiffness elements and often involve strong inelastic behavior in parts of the system. In order to gain useful insight into the behavior of these systems, one degree of freedom piecewise linear elastic and inelastic systems are first analyzed and the behavior to long duration transient stochastic excitations is investigated. Using subset simulation method, probabilistic response spectra characteristics and estimates of the sensitivity of these spectra to uncertainties in system and loading parameters, such as initial modal frequency, stiffness ratios, size of gaps, inelastic parameters, damping values, excitation strength and frequency content, are obtained. It is shown that the performance of such systems to uncertain stochastic excitation (sinusoid pulse or earthquake type) can be enhanced by optimally designing the system parameter values. The methodology is used to investigate the reliability of the four-span Kavala bridge (Greece) under stochastic earthquake excitations. The bridge deck is supported on columns through elastomeric bearings, allowing impacts to occur between the deck structure and the piers. Short duration sinusoid pulse excitations with uncertain characteristics as well as white noise stochastic excitations are used to simulate the short and moderate duration earthquake excitations and the sensitivity of the reliability to the size of gaps affecting the behavior of the bridge is explored.

000005007 540__ $$aText je chráněný podle autorského zákona č. 121/2000 Sb.
000005007 653__ $$a

000005007 7112_ $$a4th International ASRANet Colloquium$$cAthens (GR)$$d2008-06-25 / 2008-06-27$$gASRANet4
000005007 720__ $$aPerros, K.$$iPapadimitriou, C.
000005007 8560_ $$ffischerc@itam.cas.cz
000005007 8564_ $$s190024$$uhttps://invenio.itam.cas.cz/record/5007/files/046_Papadimitriou,_Costas.pdf$$yOriginal version of the author's contribution as presented on CD, paper No. 46.
000005007 962__ $$r4967
000005007 980__ $$aPAPER