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Stabilization of a Buckled Beam by High-Frequency Excitation: Linear Analysis and Experiments

[+] Author Affiliations
Koji Tsumoto, Hiroshi Yabuno, Nobuharu Aoshima

University of Tsukuba, Tsukuba-shi, Ibaraki, Japan

Paper No. DETC2005-84947, pp. 1655-1662; 8 pages
doi:10.1115/DETC2005-84947
From:
  • ASME 2005 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference
  • Volume 1: 20th Biennial Conference on Mechanical Vibration and Noise, Parts A, B, and C
  • Long Beach, California, USA, September 24–28, 2005
  • Conference Sponsors: Design Engineering Division and Computers and Information in Engineering Division
  • ISBN: 0-7918-4738-1 | eISBN: 0-7918-3766-1
  • Copyright © 2005 by ASME

abstract

Beam is one of the fundamental elements in complex structures. It is very significant to clarify its stability under the various circumstances. In particular, the buckling phenomenon, which is characterized as a pitchfork bifurcation, has accepted much interest by many researchers. In this paper, we propose a stabilization control method for the first-mode buckling phenomenon in the clamped-clamped beam without feedback control. We analyze the stability of a buckled beam under high frequency excitation in linear theory. It is theoretically clarified and experimentally that the high-frequency excitation shifts the bifurcation point (the critical compressive force) and prevents the beam buckling.

Copyright © 2005 by ASME

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