为抑制薄壁齿轮的摇型节径振动并提升其传动效率，设计一种在齿轮结构上应用的阻尼结构。以薄壁齿轮为基础对象，首先采用有限元方法计算其摇型节径振型，随后利用模态应变能法分析阻尼结构对摇型节径振型阻尼性能的增强作用。通过有限元强迫振动响应法，进一步对薄壁齿轮阻尼结构在理论上的减振效果进行计算。最终开展对比实验验证其针对高阶摇型节径振动的实际减振效果。结果表明：设计的阻尼结构能有效抑制薄壁齿轮的摇型节径振动，使得齿轮的啮合振动显著降低。阻尼结构理论上可降低啮合振动4.9-14.1dB；实验验证在接近摇型节径振型的啮合频率激励下，其实际减振效果为4.5-8.9dB。该方法无需改变薄壁齿轮的基本结构形式，具有较高的工程应用价值。

To suppress the nodal diameter vibration of thin-walled gears and enhance their transmission efficiency, a damping structure is designed for application on the gear structure. Taking the thin-walled gear as the basic object, the nodal diameter vibration modes are first calculated using the finite element method. Subsequently, the modal strain energy method is employed to analyze the enhancement effect of the damping structure on the damping performance of the nodal diameter vibration modes. Furthermore, the finite element forced vibration response method is used to compute the theoretical vibration reduction effect of the damping structure on thin-walled gears. Finally, comparative experiments are conducted to verify its actual vibration reduction effect on high-order nodal diameter vibrations. The results indicate that the designed damping structure can effectively suppress the nodal diameter vibration of thin-walled gears, resulting in a significant reduction in gear mesh vibration. The damping structure theoretically reduces mesh vibration by 4.9-14.1 dB; experimental validation under excitation frequencies close to the nodal diameter vibration modes shows an actual vibration reduction effect of 4.5-8.9 dB. This method does not require changes to the basic structural form of thin-walled gears and has high engineering application value.