Affiliation:
1. Department of Mechanical Engineering, Technical University of Denmark, DK-2800 Lyngby, Denmark
Abstract
The damping properties of the viscous tuned mass damper are characterized by dynamic amplification analysis as well as identification of the locus of the complex natural frequencies. Optimal damping is identified by a combined analysis of the dynamic amplification of the motion of the structural mass as well as the relative motion of the damper mass. The resulting optimal damper parameter is about 15% higher than the classic value, and results in improved properties for the motion of the damper mass. The free vibration properties are characterized by analyzing the locus of the natural frequencies in the complex plane. It is demonstrated that for optimal frequency tuning the damping ratio of both vibration modes are equal and approximately half the damping ratio of the applied damper, when the damping is below a critical value corresponding to a bifurcation point. This limiting value corresponds to maximum modal damping and serves as an upper limit for damping to be applied in practice.
Subject
Mechanical Engineering,Mechanics of Materials,Condensed Matter Physics
Reference8 articles.
1. Frahm, H. , 1909, “Device for Damped Vibrations of Bodies,” U.S. Patent No. 989958, October 30.
2. The Theory of the Dynamic Vibration Absorber;Ormondroyd;Trans. ASME
3. A Note on the Damped Vibration Absorber;Brock;J. Appl. Mech.
4. Optimum Absorber Parameters for Various Combinations of Response and Excitation Parameters;Warburton;Earthquake Eng. Struct. Dyn.
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