依据弹性理论建立了齿轮的弹性体力学模型 ,进行了弹性动力学分析 ,得出了齿轮体的固有特性和振动响应 ,推导了弹性体振动模态参数和声学模态参数之间的定量关系 ,从而得到齿轮结构振动声辐射特性参数和声功率的大小 ,并用实验数据进行了验证。可用于对齿轮自鸣噪声进行计算。 Based on the theory of elasticity, the mechanical model of the elastic body of the gear was established, the elastic dynamics analysis was carried out, the inherent characteristics and the vibration response of the gear body were obtained, and the quantitative relationship between the vibration mode parameters and the acoustic modal parameters was deduced. The vibrational sound radiation characteristic parameters and acoustic power of the gear structure are obtained and verified by the experimental data. Can be used to calculate the gear noise.