Analyzing Dynamic Characteristics of Spiral Bevel Gearbox and Predicting Its Radiation Noise
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摘要: 以升船机同步系统用弧齿锥齿轮箱为研究对象,综合考虑锥齿轮副刚度激励、误差激励和啮合冲击激励等内部动态激励,建立了包含弧齿锥齿轮副、传动轴、轴承和箱体等的齿轮系统动力有限元模型,采用ANSYS对齿轮系统进行动态响应分析,得到齿轮箱的振动位移、振动速度及振动加速度;以箱体表面节点振动位移为边界激励条件,在SYSNOISE中建立箱体声学边界元模型,采用直接边界元法进行辐射噪声预估,得出箱体表面的声压云图及场点的辐射噪声。结果表明:齿轮箱动态响应及辐射噪声的峰值频率均出现在啮合频率及其倍频处。Abstract: Considering the internal dynamic excitation of a spiral bevel gearbox in the synchronization system of aship lift such as stiffness excitation,error excitation and meshing impact excitation,we established the dynamic fi-nite element model of the gearbox that includes meshing spiral bevel gears,transmission shafts,bearings and gear-box houses. The dynamic response of the gearbox is analyzed through using ANSYS, and consequently the displace-ment,speed and acceleration of the gearbox are obtained. Based on SYSNOISE,an acoustic boundary elementmodel of the gearbox is built by using the boundary conditions such as a node's vibration displacement from housingsurface. Then radiation noise prediction is carried out through the direct boundary element method,and the surfaceacoustic pressure contour on the housing surface and the radiation noise at determined field points is obtained. Theresults indicate that the peak values of dynamic response and radiation noise of the gearbox both appear at meshingfrequency and its octave frequencies.
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Key words:
- spiral bevel gearbox /
- dynamic excitation /
- vibrations /
- analysis
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[1] Li M，Hu H Y. Dynamic analysis of a spiral bevel-geared rotor-bearing system[J]. Journal of Sound and Vibration，2003，259(3):605～624 [2] 王三民等. 含间隙和时变啮合刚度的弧齿锥齿轮传动系统非线性振动特性研究[J]. 机械工程学报，2003，39(2):28～32 [3] 赵宁等. 弧齿锥齿轮传动系统动态特性研究[J]. 机械设计，2010，27(7): 69～73，78 [4] Wang P Y，Fan S C，Huang Z G. Spiral bevel gear dynamic con-tact and tooth impact analysis[J]. Journal of MechanicalDesign，2011，133(8) [5] Abbes M S，et al. An acoustic-structural interaction modelling forthe evaluation of a gearbox-radiated noise[J]. InternationalJournal of Mechanical Sciences，2008，50(3):569～577 [6] Moyne S L，Tebec J L. Ribs effects in acoustic radiation of agearbox-their modelling in a boundary element method[J]．Applied Acoustics，2002，63(2):223～233 [7] 林龙，李红云，陈大跃. 地铁齿轮箱振动与噪声计算分析[J]．噪声与振动控制，2007，27(2):37～39 [8] 周建星，刘更，马尚君. 内激励作用下齿轮箱动态响应与振动噪声分析[J]. 振动与冲击，2011，30(6):234～238 [9] 林腾蛟，杨妍妮，李润方等. 弧齿锥齿轮传动内部动态激励数值仿真[J]. 重庆大学学报，2009，32(6):609～613 [10] 林腾蛟，廖勇军，李润方等. 双环减速器辐射噪声数值仿真及试验研究[J]. 振动与冲击，2010，29(3):43～47 [11] 李增刚. SYSNOISE Rev5. 6 详解[M]. 北京:国防工业出版社，2005 [12] 李增刚，詹福良. Virtual. Lab Acoustics 声学仿真计算高级应用实例[M]. 北京:国防工业出版社，2010 -
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