We propose the application of a resonant shunt to wheels to reduce the high-frequency wheel noise generated by railway vehicles. High-frequency wheel noise is caused by the resonance of wheels owing to contact between rails and wheels. A resonant shunt is applied at specific frequencies to reduce wheel resonance. In this work, the high-frequency noise generated by a wheel moving on a curved railway track was analyzed and compared with the dynamic characteristics of the wheel. Further, to reproduce the high-frequency noise of the wheel, an external electric signal was input to a piezoelectric patch connected to the wheel to generate noise and vibration at the natural frequency of the wheel. The optimum mounting position of the piezoelectric patch was determined by numerically analyzing the strain energy of the wheel. Piezoelectric patches were connected to their respective resonant shunts to form a vibration reduction array. A synthetic inductor was tuned to effectively reduce the high-frequency vibration and noise of the wheel generated at its natural frequency. In the wheel excited at its natural frequency, vibration and noise were reduced by approximately 4–10 dB and 8–12 dB(A), respectively. In the wheels that were simultaneously excited at two natural frequencies, vibration and noise were reduced by 5 dB and 5 dB(A), respectively. The results showed that the resonant shunt could effectively reduce the noise and vibration generated by the wheel. Therefore, the resonant shunt is an effective circuit system for reducing noise and vibration even in large structures.

我们建议在车轮上使用谐振分流器，以减少铁路车辆产生的高频车轮噪声。高频车轮噪音是由于轨道和车轮之间的接触而引起的车轮共振所引起的。在特定的频率上施加谐振分流器以减少车轮谐振。在这项工作中，分析了车轮在弯曲的铁路轨道上运动产生的高频噪声，并将其与车轮的动态特性进行了比较。此外，为了再现车轮的高频噪声，将外部电信号输入到连接至车轮的压电贴片，以产生车轮的固有频率的噪声和振动。通过数值分析车轮的应变能来确定压电贴片的最佳安装位置。压电贴片连接到它们各自的谐振分流器，以形成减振阵列。对合成电感器进行了调整，以有效降低在其固有频率下产生的车轮高频振动和噪声。在以其固有频率激发的车轮中，振动和噪声分别降低了约4–10 dB和8–12 dB（A）。在以两个固有频率同时激励的车轮中，振动和噪音分别降低了5 dB和5 dB（A）。结果表明，共振分流器可以有效降低车轮产生的噪声和振动。因此，即使在大型结构中，谐振分流器也是一种用于降低噪声和振动的有效电路系统。对合成电感器进行了调整，以有效降低在其固有频率下产生的车轮高频振动和噪声。在以其固有频率激发的车轮中，振动和噪声分别降低了约4–10 dB和8–12 dB（A）。在以两个固有频率同时激励的车轮中，振动和噪音分别降低了5 dB和5 dB（A）。结果表明，共振分流器可以有效降低车轮产生的噪声和振动。因此，即使在大型结构中，谐振分流器也是一种用于减少噪声和振动的有效电路系统。对合成电感器进行了调整，以有效降低在其固有频率下产生的车轮高频振动和噪声。在以其固有频率激发的车轮中，振动和噪音分别降低了约4–10 dB和8–12 dB（A）。在以两个固有频率同时激励的车轮中，振动和噪音分别降低了5 dB和5 dB（A）。结果表明，共振分流器可以有效降低车轮产生的噪声和振动。因此，即使在大型结构中，谐振分流器也是一种用于减少噪声和振动的有效电路系统。振动和噪声分别降低了约4–10 dB和8–12 dB（A）。在以两个固有频率同时激励的车轮中，振动和噪音分别降低了5 dB和5 dB（A）。结果表明，共振分流器可以有效降低车轮产生的噪声和振动。因此，即使在大型结构中，谐振分流器也是一种用于减少噪声和振动的有效电路系统。振动和噪声分别降低了约4–10 dB和8–12 dB（A）。在以两个固有频率同时激励的车轮中，振动和噪音分别降低了5 dB和5 dB（A）。结果表明，共振分流器可以有效降低车轮产生的噪声和振动。因此，即使在大型结构中，谐振分流器也是一种用于减少噪声和振动的有效电路系统。