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- Title
Estimation of peak relative velocity and peak absolute acceleration of linear SDOF systems.
- Authors
Jianwei Song; Yi-Lun Chu; Zach Liang; Lee, George C.
- Abstract
In the seismic analysis and design of structures, the true velocity and absolute acceleration are usually approximated by their corresponding pseudo-values. This approach is simple and works well for structures with small damping (say, less than 15%). When the damping of a structure is enhanced ['or the purpose of response reduction, it may result in large analysis and design errors. Based on theory of random vibration and the established mechanism of seismic response spectra analysis, a method is developed (1) to predict the relative velocity spectra with any damping ratio level directly from the 5% standard pseudo-acceleration spectrum; and (2) to estimate the peak absolute acceleration. The accuracy of both is validated by using two selected ensembles of ground motion records.
- Subjects
DAMPING (Mechanics); EARTHQUAKE engineering; DAMPING of seismic waves; RANDOM noise theory; GAUSSIAN processes; SPECTRUM analysis
- Publication
Earthquake Engineering & Engineering Vibration, 2007, Vol 6, Issue 1, p1
- ISSN
1671-3664
- Publication type
Article
- DOI
10.1007/s11803-007-0702-x