摘要
以带宽分别为19 mm和25 mm的ZA型汽车同步带为研究对象,理论分析了带宽对汽车同步带振动噪声的影响。建立了有限元分析模型,分析了其横向振动固频特性和在啮合冲击激励作用下的谐响应特性;并以谐响应分析得到的同步带表面振动位移为边界条件,采用声场封闭的直接边界元法建立了汽车同步带的声学仿真模型,对汽车同步带的辐射噪声进行仿真分析,得到了两不同带宽的同步带的声场声压云图及辐射声压的频响曲线,并研究了带宽对同步带辐射噪声的影响规律。
Taking the ZA automotive synchronous belts that the beh width is 19 mm and 25 mm as research object, the influence of the belt width on the vibration and noise of the automotive synchronous belt is analyzed in theory. A finite element analysis model of the ZA automotive synchronous belt drive system is estab-lished, the natural frequency characteristic of the automobile synchronous belt transverse vibration and its harmonic response under the action of meshing impact excitation are analyzed, and taking the surface vibration displacement of the synchronous belt obtained by harmonic response analysis as boundary condition, the acoustic boundary element analysis model of the automobile synchronous belt is established by the direct boundary ele- ment method that its sound field is closed, the radiated noise of automotive synchronous belt is simulated and analyzed, the sound pressure cloud picture and the frequency response curve of radiation pressure of two synchronous belt with different bandwidth are obtained, and the influence law of the belt width on the vibration and noise of the synchronous belt is studied.
出处
《机械传动》
CSCD
北大核心
2017年第5期119-122,共4页
Journal of Mechanical Transmission
基金
教育部"春晖计划"项目(Z2014130)
吉林省教育厅计划项目(2015LY501L06)
关键词
汽车同步带
带宽
振动
辐射噪声
Automotive synchronous belt Belt width Vibration Radiated noise
