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SUEDA Miwa
| Mechanical Science Division | Assistant Professor |
| Department of Mechanical Engineering and System Design |
Performance information
■ Paper- Numerical study on transient response of the bowed string
Miwa SUEDA; Yohei ONODA; Chiharu TADOKORO; Hiroki MORI; Ken NAKANO; Takuo NAGAMINE
Mechanical Engineering Journal, Volume：12, Number：2, Mar. 2025, [Reviewed], [Lead, Corresponding]
Japan Society of Mechanical Engineers, English, Scientific journal
DOI：https://doi.org/10.1299/mej.24-00441
DOI ID：10.1299/mej.24-00441, eISSN：2187-9745 - Controlling windscreen wiper vibration through yaw angle adjustments: a study of dynamic contact behavior using fluorescence observation
Chiharu Tadokoro; Hiroaki Kobayashi; Miwa Sueda; Takuo Nagamine; Sorin-Cristian Vlădescu; Tom Reddyhoff; Ken Nakano
Frontiers in Mechanical Engineering, Volume：10, Nov. 2024, [Reviewed]
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, English, Scientific journal
DOI：https://doi.org/10.3389/fmech.2024.1471045
DOI ID：10.3389/fmech.2024.1471045, eISSN：2297-3079 - Effect of damping and rotor moment of inertia on stability of self-synchronization for two unbalanced rotors
Hiroki Mori; Miwa Sueda; Kousuke Shiroshita; Takahiro Kondou
Journal of Sound and Vibration, Volume：570, First page：118103, Last page：118103, Feb. 2024, [Reviewed]
Elsevier BV, Scientific journal
DOI：https://doi.org/10.1016/j.jsv.2023.118103
DOI ID：10.1016/j.jsv.2023.118103, ISSN：0022-460X, 共同研究・競争的資金等ID：49581914;49581915 - Analytical study of self-synchronization in two unbalanced rotors based on energetic conditions
Miwa Sueda; Hiroki Mori; Takahiro Kondou
Journal of Sound and Vibration, Volume：521, Mar. 2022, [Reviewed], [Lead]
When self-synchronization occurs in a system in which several nonlinear self-excited oscillators with different natural frequencies are coupled, the frequencies of all of the oscillators are entrained due to their interaction. Although many researchers have examined the characteristics of this phenomenon, the mechanism has not yet been completely clarified. This paper treats a system comprising two co-rotating unbalanced rotors fixed to a rigid body and derives the two energetic conditions satisfied by energy dissipated in damping and energy transferred in the system from the energy integration of the equations of motion. Using these two conditions and the approximation of constant angular frequency, methods for obtaining an approximate solution and for deriving the existence limit of this solution are proposed. The two methods clarify the parameter effects on the phenomenon efficiently and are expected to contribute to the clarification of the mechanism and the application to vibration machines.
Scientific journal
DOI：https://doi.org/10.1016/j.jsv.2021.116618
Scopus：https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=85123028494&origin=inward
Scopus Citedby：https://www.scopus.com/inward/citedby.uri?partnerID=HzOxMe3b&scp=85123028494&origin=inward
DOI ID：10.1016/j.jsv.2021.116618, ISSN：0022-460X, eISSN：1095-8568, SCOPUS ID：85123028494
- 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
Sep. 2024
Sep. 2024 - Sep. 2024, Japanese, Oral presentation - 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, Aug. 2024
Aug. 2024 - Aug. 2024, English, Oral presentation - 多自由度支持系で発生する自己同期現象の解析および実験的検証
久保山 徳聖; 森 博輝; 末田 美和; 宗和 伸行; 井上 卓見
Aug. 2023
Aug. 2023 - Aug. 2023, Japanese, Oral presentation
共同研究・競争的資金等ID：49581915 - 回転型振動子の自己同期現象に関するエネルギー的考察（振幅の推定）
末田 美和; 森 博輝; 宗和 伸行; 井上 卓見
Aug. 2023
Aug. 2023 - Aug. 2023, Japanese, Oral presentation
共同研究・競争的資金等ID：49581914;49581915 - The Effect of Damping on Self- Synchronization in Two Unbalanced Rotors
Miwa Sueda; Hiroki Mori; Takahiro Kondou
The 19th Asia Pacific Vibration Conference, Nov. 2022
Nov. 2022 - Nov. 2022, English, Oral presentation - 回転型振動子の自己同期現象に関するエネルギー的考察（印加電圧の影響）
末田 美和; 森 博輝; 近藤 孝広
Jun. 2022
Jun. 2022 - Jun. 2022, Japanese, Oral presentation - 回転型振動子に発生する自己同期現象（エネルギーバランスに基づく解析）
末田 美和; 森 博輝; 近藤 孝広
Mar. 2022
Mar. 2022, Japanese, Oral presentation - 回転型振動子の自己同期現象に関するエネルギー的考察（不釣り合い量の影響）
末田 美和; 森 博輝; 近藤 孝広
Sep. 2021
Sep. 2021 - Sep. 2021, Japanese - 回転型振動子の自己同期現象における重力の影響
城下 皓亮; 末田 美和; 森 博輝; 近藤 孝広
Mar. 2021
Mar. 2021, Japanese, Oral presentation - 回転型振動子の自己同期現象に対する自由度の影響（エネルギー的考察）
末田 美和; 近藤 孝広; 森 博輝
Sep. 2020
Sep. 2020 - Sep. 2020, Japanese, Oral presentation - Energetic Consideration on the Occurrence Condition of Self-Synchronization in Two Unbalanced Rotors
Miwa Sueda; Takahiro Kondou; Hiroki Mori
The 18th Asia Pacific Vibration Conference, Nov. 2019
English, Oral presentation - 回転型振動子の自己同期現象に関するエネルギー的考察（回転方向の影響）
末田 美和; 近藤 孝広; 森 博輝
Aug. 2019
Aug. 2019 - Aug. 2019, Japanese, Oral presentation - 回転型振動子の自己同期現象に関するエネルギー的考察
末田 美和; 近藤 孝広; 森 博輝
Mar. 2019
Japanese, Oral presentation
■ Research projects
- 初期状態が自己同期現象に及ぼす影響のエネルギー的考察
31 Aug. 2023 - 31 Mar. 2025
Grant amount(Total)：2860000, Direct funding：2200000, Indirect funding：660000
Grant number：23K19088
論文ID：44053258, 講演・口頭発表等ID：49582697 - エネルギー条件に立脚した自己同期現象の原理解明と振動機械の合理的設計法の構築
01 Apr. 2022 - 31 Mar. 2025
Grant amount(Total)：13390000, Direct funding：10300000, Indirect funding：3090000
Grant number：23K22703
論文ID：44053258, 講演・口頭発表等ID：49582737