タケダ　マサカズ   Masakazu Takeda   武田　真和    所属   追手門学院大学  理工学部 機械工学科    職種   講師
発表年月日	2020/03/13
発表テーマ	衝突機構を用いた超磁歪材料による受動制振システムに関する研究
会議名	日本機械学会関東支部総会講演会講演論文集
主催者	一般社団法人 日本機械学会
発表形式	その他
開催期間	2020/03/13～2020/03/13
発表者・共同発表者	工藤 大輝,菅原 佳城,武田 真和
概要	A passive damping system using Giant Magnetostrictive Materials (GMM) converts mechanical energy of vibration into electrical energy by Villari effect of the GMM. The generated electrical energy dissipates as Joule heat by a resistor. The system is suited for a flexible structure in spacecraft because it does not require external power supply. The system’s vibration control performance is better as the deformation speed of the GMM becomes faster. In this research, the paper proposed a collision mechanism to convert vibration frequency from low into high so as to improve control performance. First, the passive damping system is modeled using the finite element method to analyze numerically. The model assumes that a cantilever beam is a flexible structure and uses spacers as a collision mechanism. When spacers move associated with vibration of the beam, spacers collide with the passive damping system. Furthermore, a simple model is proposed to deal with a collision mechanism and the finite element method. As a result of the numerical analysis, the damping effect is confirmed. Moreover, an experimental equipment is built to evaluate the validity of the proposed method. The experimental results partially showed the effectiveness of proposed method and reveled its problems
researchmap用URL	https://www.jstage.jst.go.jp/article/jsmekanto/2020/0/2020_17A13/_pdf