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Generation of critical stochastic earthquakes
Author(s) -
Srinivasan Mukund,
Corotis Ross,
Ellingwood Bruce
Publication year - 1992
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.4290210401
Subject(s) - stochastic process , sensitivity (control systems) , excitation , noise (video) , ground motion , energy (signal processing) , stochastic modelling , statistical physics , seismology , mathematics , geology , physics , engineering , computer science , statistics , electronic engineering , quantum mechanics , artificial intelligence , image (mathematics)
A stochastic critical excitation is defined as that excitation with a given variance that maximizes the variance in the dynamic response of a system. A non‐stationary filtered shot noise is used to develop a stochastic critical excitation model of an earthquake ground motion process, and the response statistics for a linear system are determined in both time and frequency domains. The sensitivity of response to several assumed earthquake pulse arrival rate functions is examined. Responses to recorded strong ground motion and to stochastic critical excitations with the same total energy are compared to assess the degree of conservatism in the procedure. An application of the procedure to seismic qualification of equipment is presented.