動吸振器による多自由度系の制振 : 第3報,Γ形構造物の制振について

概要

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In the previous report, the design method of the dynamic absorbers for suppressing the vibration of multi-degree of freedom systems was established. This paper shows that resonances of Γ-shaped structures with 90°angles are reduced effectively by using dual dynamic absorbers with this design method. First, each vibration mode of this structure is analyzed in order to find a suitable setting point for each dynamic absorber for controlling each mode, and the equivalent masses at its setting points. The structure has three vibration modes which are able to suppress the frequency range of DC to 200 Hz. Thus three dual dynamic absorbers are designed against them, after preparing the complex transfer matrix representation of the dual dynamic absorbers. Next the vibration controlling effect of the structure with three dual dynamic absorbers set is confirmed theoretically by the transfer matrix method. The effectiveness of the design method is demonstrated experimentally.
一般社団法人日本機械学会の論文
1986-09-25