Quick Search:    advanced search

GSW Home   GeoRef Home   My GSW Alerts   Contact GSW   About GSW   Journals List   Help

This Article Full Text (PDF) References Alert me when this article is cited Alert me if a correction is posted Services Email this article to a friend Similar articles in this journal Alert me to new issues of the journal Download to citation manager Citing Articles Citing Articles via HighWire Citing Articles via Google Scholar Google Scholar Articles by UDWADIA, F. E. Articles by TRIFUNAC, M. D. Search for Related Content GeoRef GeoRef Citation

Damped fourier spectrum and response spectra

EARTHQUAKE ENGINEERING RESEARCH LABORATORY CALIFORNIA INSTITUTE OF TECHNOLOGY, PASADENA, CALIFORNIA 91109

Abstract

This paper describes the physical relationships that exist between the Fourier transform and the response spectrum of a strong-motion accelerogram. By developing the new concept of the "Damped Fourier Spectrum" (D.F.S.), we show that the velocity and displacement of the damped oscillator can be represented by a linear combination of the real and imaginary parts of the D.F.S. and by the initial conditions. The D.F.S. represents a new way of "smoothing" the classical Fourier Transform by using a physically based filter.

This article has been cited by other articles:

				M. D. TRIFUNAC and A. G. BRADY A study on the duration of strong earthquake ground motion Bulletin of the Seismological Society of America, June 1, 1975; 65(3): 581 - 626. [Abstract] [PDF]