000013254 001__ 13254
000013254 005__ 20161114160333.0
000013254 04107 $$aeng
000013254 046__ $$k2009-06-22
000013254 100__ $$aCacciola, P.
000013254 24500 $$aStochastic seismic analysis of structural systems vibrating under spectrum compatible excitations

000013254 24630 $$n2.$$pComputational Methods in Structural Dynamics and Earhquake Engineering
000013254 260__ $$bNational Technical University of Athens, 2009
000013254 506__ $$arestricted
000013254 520__ $$2eng$$aSeismic assessment of linear behaving systems is usually performed adopting the well-known modal analysis along with modal truncation of higher modes. However, in the case in which the contribution of higher modes is not negligible, modal correction methods have been introduced to improve the accuracy of the dynamic response, for both deterministic and stochastic input. In literature fewer contributions than the deterministic case have been devoted to stochastic field. Aim of this paper is to propose a new computationally competitive method for the seismic analysis of linear behaving system vibrating under nonstationary Gaussian excitations. The method is based on the extension of the MAM for the evaluation of the nonstationary response spectral moments. In this regard the evolutionary spectrum compatible ground motion model recently proposed is used for modeling the nonstationary seismic process. Numerical results from the study of a large MDOF structure show the accuracy and the efficiency of the proposed technique.

000013254 540__ $$aText je chráněný podle autorského zákona č. 121/2000 Sb.
000013254 653__ $$aStochastic Seismic Analysis, Modal Correction Method, Nonstationary spectral moments, Spectrum Compatible ground motion process. Abstract. Seismic assessment of linear behaving systems is usually performed adopting the well-known modal analysis along with modal truncation of higher modes. However, in the case in which the contribution of higher modes is not negligible, modal correction methods have been introduced to improve the accuracy of the dynamic response, for both deterministic and stochastic input. In literature fewer contributions than the deterministic case have been devoted to stochastic field. Aim of this paper is to propose a new computationally competitive method for the seismic analysis of linear behaving system vibrating under nonstationary Gaussian excitations. The method is based on the extension of the MAM for the evaluation of the nonstationary response spectral moments. In this regard the evolutionary spectrum compatible ground motion model recently proposed is used for modeling the nonstationary seismic process. Numerical results from the study of a large MDOF structure show the accuracy and the efficiency of the proposed technique.

000013254 7112_ $$aCOMPDYN 2009 - 2nd International Thematic Conference$$cIsland of Rhodes (GR)$$d2009-06-22 / 2009-06-24$$gCOMPDYN2009
000013254 720__ $$aCacciola, P.$$iMuscolino, G.
000013254 8560_ $$ffischerc@itam.cas.cz
000013254 8564_ $$s861780$$uhttps://invenio.itam.cas.cz/record/13254/files/CD378.pdf$$yOriginal version of the author's contribution as presented on CD, section: Uncertainty and reliability in computational structural dynamics - ii (MS).
000013254 962__ $$r13074
000013254 980__ $$aPAPER