124 ピエゾ素子を用いたパッシブ制振による鉄道車両の弾性振動低減 : 模型を用いた実現可能性の検討(スマートパッシブダンピング)

概要

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In this study, piezoelectric elements are applied to passive vibration suppression of beam structure, or a primitive model of railway carbody. Piezoelectric devices are electrically shunted by an external electric circuit, e.g., a serial connected inductor and resistor. Results of excitation tests show that piezoelectric elements are more effectively increase the loss factor of the structure than damping layers that have already been put into practical use. According to simulation results, it is expected that the 1st mode bending vibration can be suppressed successfully even if the structure is as large as an actual railway carbody. A modified shunt circuit is also proposed in order to improve the possibility of practical implementation.
社団法人日本機械学会の論文
2002-01-11