基于半轴扭转刚度调校的新型微客轰鸣声治理  

Interior Booming Noise Reduction in New Minivans Based on Axle-shaft Torsional Stiffness Modification

作　　者：吴昱东[1,2] 李人宪[1] 丁渭平[1] 康强 杨明亮[1] 向伟[1] 

机构地区：[1]西南交通大学机械工程学院,成都610031 [2]Department of Mechanical Engineering,KU Leuven,Belgium 3001 [3]上汽通用五菱汽车股份有限公司,广西柳州545007

出　　处：《噪声与振动控制》2016年第1期70-74,78,共6页Noise and Vibration Control

基　　金：高等学校博士学科点专项科研基金资助项目(20100184110002);中央高校基本科研业务费专项资金资助(SWJTU12CX036)

摘　　要：针对传动系扭振引致的新型微型客车内轰鸣声问题,以某型国产前置后驱新型微型客车为研究对象,建立传动系扭振理论分析模型,获取微车传动系扭振特性。运用传动系扭振测试分析结果对理论分析模型的有效性进行验证,并在此基础上开展关键部件扭转刚度对微车传动系扭振模态的影响规律研究,充分挖掘传动系部件参数设计上的抗扭振潜力。提出通过调校驱动半轴扭转刚度实现微车传动系扭振问题治理的方法,并设计针对性实验对该方法进行验证。结果表明:适当降低驱动半轴扭转刚度,可以有效减小微车传动系扭振,进而降低车内轰鸣声,提升车内声振舒适性。The interior booming noise of new minivans caused by drivetrain torsional vibration was studied. The model of a typical FR minivan made in China was built for lumped-parameter torsional vibration analysis of the drivetrain. The model was validated by a drivetrain torsional vibration test. Then, the characteristics and the stiffness sensitivities of the minivan drivetrain torsional vibration were analyzed based on the validated model. The axle-shaft torsional stiffness was found to be the most sensitive parameter to the minivan drivetrain torsional vibration. An approach to reduce the drivetrain torsional vibration by modifying the axle-shaft torsional stiffness was proposed and the validation experiment was conducted. The results show that the well-designed torsional stiffness of the axle-shaft can effectively reduce the drivetrain torsional vibration and the interior booming noise so that the acoustic comfort of the new minivans is improved.

关 键 词：声学 驱动半轴 扭转刚度 扭振 新型微客 轰鸣声 

分 类 号：TU112[建筑科学—建筑理论] TH132[机械工程—机械制造及自动化]