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A Study of an Arm Type Damper Consisting of Two Links, Two Joints and a Hinge

[+] Author Affiliations
Taichi Matsuoka, Kenichiro Omata, Yasuhisa Okano

Meiji University, Kawasaki, Kanagawa, Japan

Paper No. PVP2002-1442, pp. 161-165; 5 pages
doi:10.1115/PVP2002-1442
From:
  • ASME 2002 Pressure Vessels and Piping Conference
  • Seismic Engineering, Volume 2
  • Vancouver, BC, Canada, August 5–9, 2002
  • Conference Sponsors: Pressure Vessels and Piping Division
  • ISBN: 0-7918-4656-3
  • Copyright © 2002 by ASME

abstract

In this paper, an arm type passive damper consisting of two links, two joints and a hinge, which is similar to a human arm, has developed. Two magnetic ball joints were used for the joints and a rotary friction damper was used for the hinge. The arm type damper has six degrees of freedom and gives damping in three translational and three rotational directions. The resisting force characteristics of the damper in three translational directions were analyzed. A trial damper was made and the load-displacement curves of the damper in three translational directions were measured. The experimental results agree with the theoretical results to some degree. Next, the damper was attached to a three-degree-of-freedom system composed of a mass, three guide rails and four coil springs, in which the mass is able to move in three translational directions along the guide rails. The seismic responses of the mass in three translational directions were measured using a two-dimensional electrohydraulic type shaking table and the experimental results were compared with the calculated results obtained by the Mathematica 3.0. The experimental results agree with the calculated results to some degree, and the effects of vibration suppression of the damper and the propriety of the calculations were substantiated.

Copyright © 2002 by ASME
Topics: Hinges , Dampers

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