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The non‐stationary cross‐correlation coefficients in the seismic analysis of MDOF structural systems
Author(s) -
Falsone Giovanni,
Neri Fabio
Publication year - 2003
Publication title -
earthquake engineering and structural dynamics
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.218
H-Index - 127
eISSN - 1096-9845
pISSN - 0098-8847
DOI - 10.1002/eqe.319
Subject(s) - modal , white noise , structural engineering , cross correlation , modal analysis , transient (computer programming) , seismic analysis , noise (video) , correlation , seismic noise , mathematics , engineering , mathematical analysis , seismology , geology , computer science , statistics , finite element method , geometry , materials science , polymer chemistry , operating system , artificial intelligence , image (mathematics)
A method concerning the evaluation, in a very compact form, of the non‐stationary modal cross‐correlation coefficients of MDOF structural systems subjected to seismic excitations is presented. It is available both in the case when the excitation is considered as a white‐noise process and when it is considered as a filtered process. The evaluation of these coefficients is required when a transient seismic analysis is performed by the use of the modal response spectrum approach. This is necessary when the strong‐motion phase of the earthquake is significantly short with respect to the fundamental period of the structure. Copyright © 2003 John Wiley & Sons, Ltd.