NEHRP Clearinghouse
- Title
- Eigenproperties and Response of Primary Structure and Equipment Systems by Perturbation Approach.
- File
- PB87129342.pdf
- Author(s)
- Suarez, L. E.; Singh, M. P.
- Source
- National Science Foundation, Washington, DC., April 1986, 116 p.
- Identifying Number(s)
- VPI-E-86-9
- Abstract
- The report presents a systematic matrix perturbation analysis for calculating the eigen-properties of combined single degree-of-freedom seismic equipment and secondary subsystems supported on primary structures in terms of the eigenproperties of the individual subsystems. For a comprehensive treatment of the problem, three cases are considered: (1) classically damped combined system, (2) classically damped primary system but nonclassically damped combined system and (3) non-classically damped primary as well as combined system. The combined system properties, when calculated according to the procedures presented in the report, can be used to obtain the response like seismic floor response spectra which incorporate the effect of the dynamic interaction between the two sub-systems.
- Keywords
- Measuring instruments; Floors; Secondary systems; Supports; Damping; Electric power plants; Perturbation; Earthquake engineering; Earthquakes; Seismic surveys; Responses; Equipment; Vibrations; Structure engineering; Dynamic structural analysis