薄肉平板における渦度関数とパワーフローパターンについて

概要

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This paper considers the active control of a vibrating thin plate from the viewpoint of a power flow control methodology. It is the purpose of this paper to elucidate the generation mechanism of power flow patterns induced in an actively controlled thin plate. Firstly, this paper shows that power flow patterns such as the straight type, diverting type and vortex type are dependent upon both specific dominant vibration modes and locations of control and disturbance forces. Using modal energy, the dominant vibration modes are made clear. Then, by using the vibration modes, a methodology showing how the power flow patterns are constructed is presented. In addition to the power flow patterns mentioned above, a saddle-point type is found under a special set of circumstances. Finally, the generation mechanism of the saddle-point type is discussed by utilizing a vorticity function derived from an energy stream function in a vibration intensity field.
一般社団法人日本機械学会の論文
1993-10-25