水中電動トランスデューサーの共振周波数を減らすためのほぼゼロの硬さサスペンション

Shitao Sun¹, Yuhan Bi¹, Xi Zhang^1,2

¹School of Mechanical Engineering, Shanghai Jiao Tong University, Shanghai 200240, China.

The Journal of the Acoustical Society of America

|February 12, 2026

まとめ

この研究は,水中電動変換器のための新しい準ゼロ硬度 (QZS) 機構を導入しています. QZSシステムは,超低共振周波数と振動性能を向上させ,特殊なアプリケーションに不可欠です.

科学分野:

機械工学の機械工学
アコースティクスアコースティクス
振動分析振動分析について

背景:

水中の電動力学トランスデューサには,高い静的負荷能力と低い共振周波数が必要です.
従来の線形システムは,両方を同時に達成する際の制限に直面しています.

研究の目的:

トランスデューサーにおける超低周波振動性能の強化のための非線形サポートメカニズムを開発する.
トランスデューサーのダイナミクスを改善するために,準ゼロ硬度 (QZS) 構造を調査する.

主な方法:

トランスデューサーの非線形動的モデルの開発.
ハーモニック・バランス・メソッドを用いた位移りと音圧レベルの反応の分析.
数値シミュレーションと衝突ハンマーテストによる実験的検証.

主要な成果:

QZSメカニズムは,高い静的負荷能力を維持しながら,等価の硬さを効果的に軽減します.
線形システムと比較して,有意に低い共振周波数と超低周波の振動行動の改善が観察されました.
実験的検証により,共振周波数が低下し,加速反応が強化されたことが確認されました.

結論:

提案されたQZSサスペンションメカニズムは,超低周波共鳴周波数を成功裏に達成しています.
この技術は,水中超低周波電動トランスデューサーのアプリケーションに重要な可能性を秘めています.

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