NEHRP Clearinghouse
- Title
- Frequency Content, Intensity and Yield Level in Nonlinear Dynamic Response.
- File
- PB300909.pdf
- Author(s)
- Derecho, A. T.; Iqbal, M.; Ghosh, S. K.; Fintel, M.
- Source
- National Science Foundation, Washington, DC. Engineering and Applied Science., January 1978, 12 p.
- Abstract
- Three major parameters characterizing earthquake motions affect structural response. These include intensity, duration, and frequency content. The third, frequency content, appears to be the least explored, particularly with reference to the problem of critical excitation. In this paper, an attempt is made to characterize input motions in terms of frequency content on the basis of their 5%-damped velocity response spectra as peaking and broad band. Results of analyses for isolated structural walls having different fundamental period and yield level are presented. These results indicate the dependence of the critical response on the frequency content of the input motion and the yield level of the structure. The relationship of intensity and frequency content in determining the critical input motion for a structure with a specified yield level is also discussed.
- Keywords
- Seismic design; Earthquake resistant structures; Intensity; Seismic waves; Walls; Dynamic response; Earthquake engineering; Yield strength; Frequencies; Dynamic structural analysis