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	2018
発表テーマ	ノズルからの流体吹出し吸込みによるシートフラッタの非接触アクティブ制振
会議名	年次大会
学会区分	全国学会
発表形式	口頭（一般）
発表者・共同発表者	高橋 輝,渡辺 昌宏,廣明 慶一,武田 真和
概要	<p>This paper presents the results of experiments on a non-contact active feedback control to suppress a flow-induced sheet flutter which is clamped upper side in a passage without wall. The sheet flutter is suppressed by fluid injection and suction from a nozzle. This nozzle is combined with a loud speaker, and they work as an actuator. In this experiment, the actuator is set at midstream and downstream of the passage, and the direction of injection can be changed. Moreover, the gap between the nozzle and the sheet can be also changed. The actuator is driven by a control signal with changing the controller phase-shift between the sheet displacement and the injection. This study clarified that the optimum control phase and evaluate the critical velocity experimentally. Lastly, the suppression mechanism is discussed based on the result of a visualizing of flow experiment. The flutter is suppressed by changing the air flow. As a result, the critical flow velocity increases by about 40%.</p>
researchmap用URL	http://ci.nii.ac.jp/naid/130007620222