Heuristic spectral estimation of bivariate nonstationary processes |
| |
| Authors: | P. D. Spanos W. -Y. Tein R. G. Ghanem |
| |
| Affiliation: | (1) Department of Civil Engineering, Rice University, 77251 Houston, TX, USA;(2) Department of Civil Engineering, The Johns Hopkins University, 21218 Baltimore, MD, USA |
| |
| Abstract: | A heuristic technique is developed for the estimation of auto-spectra and cross-spectra of multivariate nonstationary random processes which are used as models of earthquake accelerograms. The spectra are estimated by considering the statistical moments of the energy of linear systems (filters) excited by the stochastic seismic processes. The usefulness of the proposed technique is demonstrated by examples.
Sommario Si propone una tecnica euristica per la determinazione degli spettri di processi aleatori non-stazionari multivariati, che vengono usati come modelli di accelerogrammi sismici. Gli spettri sono valutati considerando i momenti statistici dell'energia di sistemi lineari (filtri) eccitati dai processi sismici aleatori. Alcuni esempi dimostrano l'utilità della tecnica proposta. |
| |
| Keywords: | Random processes Spectral estimation Nonstationarity Earthquake inputs Structural dynamics |
| 本文献已被 SpringerLink 等数据库收录！ |
|
