摘要
以单级齿轮减速器为研究对象,综合考虑齿轮时变啮合刚度、误差与轴承支撑等因素,通过齿轮系统动力学方法求解齿轮箱动态激励,采用FEM/BEM方法对其噪声辐射进行了数值预估。通过对比数值仿真与Kato公式计算在噪声值及变化趋势的一致性,验证了基于数值模拟方法进行减速器噪声预估公式拟合的可行性。分析了齿轮减速器振动噪声随齿轮精度等级的变化规律,建立了齿轮精度等级与减速器振动噪声的映射关系。依据齿轮误差与转速和负载的耦合作用关系,拟合了考虑齿轮精度等级的减速器噪声预估公式,实现了由减速器基本系统参数即可直接预测其辐射噪声的功能。开展了减速器振动噪声测试实验,对实验结果与拟合公式计算结果进行了对照,验证了拟合公式预估结果的准确性。
The dynamic model of a cylindrical gear transmission system was built considering time-varying mesh stiffness,gear errors and bearing supporting.Dynamic load of the bearing was taken as an excitation,Vibration and noise radiation of a gear reducer were studied by using FEM/BEM.In case of no gear manufacturing errors,changes of radiated noise of the gear reducer versus rotation speed and load were calculated,respectively by using both numerical simulation and Kato＇s formulae,the results of both two methods agreed well.The influence of gear precision on the gear reducer noise was analyzed,then the relation between gear precision and the gear reducer noise was built.A gear reducer noise prediction formula was fitted in consideration of coupling effect between gear precision and operating conditions.The accuracy of the formula was validated with gear reducer noise measuring tests.
出处
《振动与冲击》
EI
CSCD
北大核心
2014年第7期174-180,共7页
Journal of Vibration and Shock
关键词
齿轮箱
齿轮
传动系统
误差
振动
噪声
gear box
gear
transmission system
error
vibration
noise
