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Structural responses to non-uniformly modulated evolutionary random seismic excitations

✍ Scribed by LIN, J. H. ;SUN, D. K. ;SUN, Y. ;WILLIAMS, F. W.

Publisher
John Wiley and Sons
Year
1997
Tongue
English
Weight
362 KB
Volume
13
Category
Article
ISSN
1069-8299

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✦ Synopsis

This paper presents an accurate algorithm for structural non-stationary random seismic responses. The ground acceleration is assumed to be an evolutionary random process, of which the modulation function is non-uniformly modulated, i.e. it depends on both time and frequency. The method is used to compute the non-stationary seismic responses of a non-uniform shear beam. The dependency of the power spectral densities of the excitations and of the responses on time and frequency is discussed, based on numerical results.

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