長嶺 拓夫(ナガミネ タクオ)
| 理工学研究科 機械科学部門 | 教授 |
| 工学部 機械工学・システムデザイン学科 | |
業績情報
■ 論文Controlling windscreen wiper vibration through yaw angle adjustments: a study of dynamic contact behavior using fluorescence observationChiharu Tadokoro; Hiroaki Kobayashi; Miwa Sueda; Takuo Nagamine; Sorin-Cristian Vlădescu; Tom Reddyhoff; Ken Nakano
Frontiers in Mechanical Engineering,
巻:10, 2024年11月,
[]Friction-induced vibration in the wiper system of passenger cars not only causes impaired visibility as a result of uneven water film distribution on the windscreen surface, but also leads to noise problems by transmitting vibrations as sound to the passengers. In this study, a novel experimental apparatus was developed to simulate the wiper system, enabling the change in normal support stiffness and the precise adjustment of the yaw angles of a shortened rubber blade and its flexible base relative to the drive direction of a glass plate. The use of fluorescence observation provided a significant advantage, enabling precise measurements of the position of the rubber blade tip and the water film thickness in the contact area of the rubber blade and the glass plate during operation. In conjunction with this, an accelerometer and a gap sensor were employed to measure the normal and tangential motions of the support structures, respectively. This comprehensive setup allows for precise control of blade support conditions, and provides accurate measurement for motions of rubber blade and support structures, making it a powerful tool for investigating friction-induced vibration in the wiper system. The experimental results clearly demonstrated the effectiveness of applying large yaw angles to both the rubber blade and the flexible base in suppressing friction-induced vibration, resulting in smooth motion at any drive speed. These findings have the potential to improve wiper performances under actual operating conditions.
Frontiers Media SA
DOI:https://doi.org/10.3389/fmech.2024.1471045DOI ID:10.3389/fmech.2024.1471045,
eISSN:2297-3079
■ 講演・口頭発表等ポンピング動作の力学的考察
末田 美和; 田所 千治; 長嶺 拓夫; 佐藤 勇一
Dynamics and Design Conference 2024/第67回理論応用力学講演会, 2024年09月
日本語, 口頭発表(一般)
長音階と短音階の周波数分布の特徴について
長嶺拓夫; 江刺哉瑠; 末田 美和; 田所 千治
Dynamics and Design Conference 2024/第67回理論応用力学講演会, 2024年09月
日本語, 口頭発表(一般)
Numerical study on the transient response of a bowed string
Miwa SUEDA; Yohei ONODA; Chiharu TADOKORO; Hiroki MORI; Ken NAKANO; Takuo NAGAMINE
The 17th International Conference on Motion and Vibration & The 20th Asia-Pacific Vibration Conference, 2024年08月
日本語, 口頭発表(一般)
■ 所属学協会