前置后驱MPV动力传动系统扭振分析及优化
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摘要
为解决前置后驱MPV车辆扭振问题,利用CAE分析软件建立车辆传动模型并重现车辆扭振现象,并对模型进行自由振动及强迫振动分析,获得影响车辆扭振的敏感性参数/部件并进行优化。通过分析可知引起车辆扭振的主要因素为发动机二阶激励频率与传动系统二阶固有频率相当,可通过调谐传动系统的二阶固有频率来减小车辆的扭振。根据传动系统二阶主振型可知,离合器及变速箱输入轴是影响传动系统二阶固有频率的主要因素,通过使用大转角摩擦离合器或双质量飞轮可有效减小变速箱输入端的角加速度,减小车辆扭振。
In order to solve the torsional vibration problems of FR MPV vehicle,CAE software was used to establish the vehicle transmission model and reproduce the phenomenon of torsional vibration of the vehicle,and the free and forced vibration was analysis,sensitivity parameters/components of torsional vibration was obtained. Through analysis,the main factors of the torsional vibration was the second order of engine excitation frequency the same us the second order inherent frequency of transmission system,and also adjustsecond order inherent frequency of transmission system was used to reduce the torsional vibration. According to the second order vibration mode,clutch and gearbox input shaft were the main factors affect the second order natural frequency,then large rotation friction clutch or DMF was used to reduce the torsional vibration effectively.
In order to solve the torsional vibration problems of FR MPV vehicle,CAE software was used to establish the vehicle transmission model and reproduce the phenomenon of torsional vibration of the vehicle,and the free and forced vibration was analysis,sensitivity parameters/components of torsional vibration was obtained. Through analysis,the main factors of the torsional vibration was the second order of engine excitation frequency the same us the second order inherent frequency of transmission system,and also adjustsecond order inherent frequency of transmission system was used to reduce the torsional vibration. According to the second order vibration mode,clutch and gearbox input shaft were the main factors affect the second order natural frequency,then large rotation friction clutch or DMF was used to reduce the torsional vibration effectively.
引文
[1]Thomas Wellmann,Kiran Govindsmamy. Aspects of driveline integration for optimized vehicle NVH characteristics[J].SAE,2007-01-2246.
[2]康强,吴昱东,邓江华.前置后驱汽车传动系统的扭振模态分析[J].噪声与振动控制,2015,35(1):141-144.(Kang Qiang,Wu Yu-dong,Deng Jiang-hua.Analysis of influencing factors on the drive train torsional vibration for a FR car[J].Noise and Vibration Control,2015,35(1):141-144.)
[3]郑腾灏.汽车动力传动系统扭振分析与优化[D].南京:南京航空大学,2013.(Zheng Teng-hao.Analysis and optimization of torsional vibration on automotive powertrain[D].Nanjing:Nanjing University of Aeronautics and Astronautics,2013.)
[4]魏勇,罗虹,姜艳军.摄动有限元法在汽车传动系扭振分析中的应用[J].机械设计与制造,2010(4):74-76.(Wei Yong,Luo Hong,Jiang Yan-jun.Finite element perturbation method on the application of the vehicle power-drivelinetorsional vibration analysis[J].Machinery Design and Manufacture,2010(4):74-76.)
[5]庞剑,谌刚,何华.汽车噪声与振动[M].北京:北京理工大学出版社,2006.(Pang Jian,Chen Gang,He Hua. Automobile Noise and Vibration[M].Beijing:Beijing Institute Technology Press,2006.)
[6]陈家瑞.汽车构造[M].北京:机械工业出版社,2009.(Chen Jia-rui.Automobile Mechanics[M].Beijing:China Machine Press,2009.)
[7]Liu Kefu,Coppola G.Optimal design of damped dynamic vibration absorber for damped primary system[J].Transactions of the CanadianSocitety for Mechanical Engineering,2010,34(1):119-135.
[8]Guangming Wu,Wenku Shi,Zhiyong Chen.Analysis of performance parameters of torsional vibration damper under various operating conditions[J].SAE,2013-01:993-1000.
[2]康强,吴昱东,邓江华.前置后驱汽车传动系统的扭振模态分析[J].噪声与振动控制,2015,35(1):141-144.(Kang Qiang,Wu Yu-dong,Deng Jiang-hua.Analysis of influencing factors on the drive train torsional vibration for a FR car[J].Noise and Vibration Control,2015,35(1):141-144.)
[3]郑腾灏.汽车动力传动系统扭振分析与优化[D].南京:南京航空大学,2013.(Zheng Teng-hao.Analysis and optimization of torsional vibration on automotive powertrain[D].Nanjing:Nanjing University of Aeronautics and Astronautics,2013.)
[4]魏勇,罗虹,姜艳军.摄动有限元法在汽车传动系扭振分析中的应用[J].机械设计与制造,2010(4):74-76.(Wei Yong,Luo Hong,Jiang Yan-jun.Finite element perturbation method on the application of the vehicle power-drivelinetorsional vibration analysis[J].Machinery Design and Manufacture,2010(4):74-76.)
[5]庞剑,谌刚,何华.汽车噪声与振动[M].北京:北京理工大学出版社,2006.(Pang Jian,Chen Gang,He Hua. Automobile Noise and Vibration[M].Beijing:Beijing Institute Technology Press,2006.)
[6]陈家瑞.汽车构造[M].北京:机械工业出版社,2009.(Chen Jia-rui.Automobile Mechanics[M].Beijing:China Machine Press,2009.)
[7]Liu Kefu,Coppola G.Optimal design of damped dynamic vibration absorber for damped primary system[J].Transactions of the CanadianSocitety for Mechanical Engineering,2010,34(1):119-135.
[8]Guangming Wu,Wenku Shi,Zhiyong Chen.Analysis of performance parameters of torsional vibration damper under various operating conditions[J].SAE,2013-01:993-1000.