減衰処理された両端自由はりの減衰能の評価 : 振動・騒音を制御するための減衰処理とその効果に関する研究

概要

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In this paper, the effect of damping treatments on the dynamic characteristics of the free-free beam given damping treatment is investigated. First, the damping of the member to be given the damping treatment, i.e. the free-free beam is obtained before damping treatment. Second, in order to evaluate the effect of the damping treatment which s given the free-free beam by the various dampiing materials such as synthetic resin, synthetic rubber and lead are used for the damping treatment. The damping is estimated by loss factor experimentally. For sandwich structure, the formula for estimation of damping is derived and the equation is confirmed by experiments. As a result of many considerations, within the limits of this experiment, the sandwich structure using epoxy resin as the damping material is the best method for the effect of damping. In the case of free-free sandwich beam at the third mode of vibration once the material of layer, dimension, the boundary condition of both end, exciting force and material constant are known, the damping is estimated by loss factor and the amplitude of acceleration is obtained.
公益社団法人精密工学会の論文
1983-02-05