摘要
以单级人字齿轮减速器为研究对象,综合考虑齿轮传动过程中的误差激励、啮合刚度激励建立动力学模型。通过傅里叶级数法求解,得到了轴承动载荷时域历程与频谱。以轴承动载荷为激励,采用FEM/BEM方法计算了减速器辐射噪声,得到齿轮箱声场各场点的噪声谱。通过对箱体结构进行适当改进,计算了不同箱体结构下的辐射噪声。研究并讨论了箱体结构对辐射噪声的影响,得到了肋板对箱体辐射噪声的影响规律,为减速器的减振降噪设计提供了理论依据。
A dynamic model of the herringbone gear transmission system is developed considering the time-var- ying mesh stiffness, gear errors. The time domain and frequency domain of dynamic bearing force are obtained by solving the dynamic model using Fourier series method. Taking the dynamic bearing force as excitation, the noise radiation of the gearbox is calculated by using FEM/BEM, and then the noise spectrums of different acoustic field points are obtained. Different noise radiation are computed by modifing the gearbox structure, the influence of gear- box structure that affect noise radiation are reaserched, then the rule of noise radiation with floors are obtained. The studies will provide useful theoretical guideline to the design of gearbox.
出处
《科学技术与工程》
北大核心
2014年第12期253-256,共4页
Science Technology and Engineering
基金
湖南省教育厅科研项目(10C0756)资助
关键词
箱体结构
减速器
振动
噪声
gearbox structure gear reducer vibration noise
