摘要
敲击噪声是变速器噪声的一种类型,由于变速器敲击噪声具有噪声级跳跃和明显的宽频带特征,与其他噪声有明显区别,故对变速器敲击噪声的研究尤为重要。以某款纯电动车两挡机械式自动变速器为研究对象,搭建变速器齿轮传动系统多体动力学模型,分析变速器挂挡齿轮和空套齿轮在运转过程中的角加速度、啮合力,理论计算分析得出产生敲击噪声最大的空套齿轮;并以此为例,结合轴承动态载荷的仿真结果,对变速器结构的振动响应进行理论计算,间接验证齿轮动力学模型的准确性,并研究阻滞力矩对敲击噪声的影响。
Knock noise is a kind of transmission noise.It is very important to study the knocking noise of transmission because it has the characteristics of jumping noise level and wide frequency band,which is different from other noises.A two speed automatic mechanical transmission of a pure electric vehicle is taken as the research object,and the multi-body dynamics model of the transmission gear transmission system is established.The meshing force and angular acceleration of the transmission gear and the loose gear in the running process are analyzed.The gear with the largest knocking noise is theoretically calculated.Taking this as an example,combined with the simulation results of the bearing dynamic load,the accuracy of the gear dynamic model is indirectly verified by theoretical calculation of the vibration response of the transmission structure,and the influence of the retarding torque on the knocking noise is studied.
作者
雷勇敢
陈勇
郑大伟
李光鑫
魏长银
臧立彬
陆杭聪
林霄喆
Lei Yonggan;Chen Yong;Zheng Dawei;Li Guangxin;Wei Changyin;Zang Libin;Lu Hangcong;Lin Xiaozhe(Tianjin Key Laboratory of Power Transmission and Safety Technology for New Energy Vehicles,Tianjin 300130,China;Zhejiang Geely Automotive Research Institute Co.,Ltd.,Ningbo 315336,China;Zhejiang Geely Power Assembly Research Institute,Ningbo 315300,China)
出处
《机械传动》
北大核心
2021年第5期114-119,共6页
Journal of Mechanical Transmission
基金
宁波市2025重大科技专项项目(20191ZDYF020147)
河北省科技创新战略资助项目(20180104)。
关键词
自动变速器
敲击噪声
多体动力学
阻滞力矩
Automatic transmissison
Knocking noise
Multibody dynamics
Retarding torque
