220 高周波加振による梁に生じるピッチフォーク分岐の制御

概要

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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 method for the first-mode buckling phenomenon in the clamped-clamped beam. For the buckling phenomenon in this system, we propose a stabilization control method without feedback control. High frequency excitation shifts the bifurcation point and carries out the escape from the buckling state. Furthermore, the validity of the stabilization method with high frequency excitation is experimentally confirmed by applying the theoretically Proposed control method to a buckled beam under the compressive force.
一般社団法人日本機械学会の論文
2005-08-22