NEHRP Clearinghouse
- Title
- Response of Stick-Slip Systems to Random Seismic Excitation.
- File
- PB89194427.pdf
- Author(s)
- Moser, M. A.
- Source
- National Science Foundation, Washington, DC., January 1987, 166 p.
- Identifying Number(s)
- EERL-86-03
- Abstract
- The thesis examines the response of stick-slip, or frictional, systems to harmonic and random excitation. Two frictional models are considered: constant slip force, or Coulomb, friction, and displacement dependent slip force, used to model a caster, or pivoting, wheel. The response to harmonic excitation of systems exhibiting both frictional models is determined using the method of slowing varying parameters. Changes in the response amplitude of both systems caused by the addition of a linear centering mechanism are also examined. The response of the system with displacement dependent slip force is examined under Gaussian mean zero noise excitation using the generalized equivalent linearization method. It is shown that a lower bound is obtained from the Coulomb friction system's response.
- Keywords
- Data processing equipment; Furniture; Ground motion; Earthquake engineering; Random vibration; Office equipment; Theses; Poisson processes; Excitation; Medical equipment; Seismic effects