VIBRATION ANALYSIS OF TWO BUILDINGS LINKED BY MAXWELL MODEL-DEFINED FLUID DAMPERS
✍ Scribed by W.S. ZHANG; Y.L. XU
- Publisher
- Elsevier Science
- Year
- 2000
- Tongue
- English
- Weight
- 232 KB
- Volume
- 233
- Category
- Article
- ISSN
- 0022-460X
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✦ Synopsis
Fluid dampers that operate on the principle of #uid #ow through ori"ces specially shaped and de"ned by the Maxwell model have found more and more applications in vibration mitigation of buildings and structures. This paper thus presents an accurate and e!ective procedure for determining dynamic characteristics and seismic response of adjacent buildings linked by #uid dampers. Dynamic characteristics of damper-linked adjacent buildings are obtained by solving the eigenvalue problem for real non-symmetric matrices. Random seismic response of adjacent buildings linked by dampers is determined by a combination of the state-space method and the pseudo-excitation method. Based on a derived formula, a computer program is written and extensive parametric studies are performed to assess the e!ectiveness of the #uid damper and to identify bene"cial damper relaxation time and damping coe$cient at zero frequency. It is shown that using the Maxwell model-de"ned #uid dampers of proper parameters to link adjacent buildings can increase the modal damping ratios and reduce the seismic responses of adjacent buildings signi"cantly. It is also shown that the behaviour of the adjacent buildings linked by the Maxwell model-de"ned #uid dampers could be the same as that connected by the Voigt model-de"ned viscoelastic dampers.
2000 Academic Press