轿车后排鼓音的优化改进
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摘要
首先介绍传递函数理论,提出一种基于振动传递函数的方法分析后扭力梁的振动传递特性,使其避开峰值频率来改善后排噪声问题。以某紧凑型轿车为例,通过实验测试发现其存在后排鼓音问题,利用CAE分析方法找到产生的原因,提出几种后扭力梁纵臂加粗优化方案来解决该问题,通过分析后扭力梁的振动传递函数并加以实验验证,最终确实定优化方案,较好解决后排鼓音问题。
The vibration transfer function theory is introduced. A method based on vibration transfer function for analysis of vibration transfer characteristics of torsional beams is proposed. In this method, the peak frequency can be avoided to improve the rear noise. With a compact car as an example, its rear drum sound problem is found by experimental test. Using CAE analysis method, the cause of the rear drum sound is found. Several schemes for reinforcing the trailing arm of the rear torsional beam are put forward. Through the analysis of the vibration transfer function of the torsional beam and the experimental verification, an optimal scheme is determined, and the problem of the rear drum sound is solved.
The vibration transfer function theory is introduced. A method based on vibration transfer function for analysis of vibration transfer characteristics of torsional beams is proposed. In this method, the peak frequency can be avoided to improve the rear noise. With a compact car as an example, its rear drum sound problem is found by experimental test. Using CAE analysis method, the cause of the rear drum sound is found. Several schemes for reinforcing the trailing arm of the rear torsional beam are put forward. Through the analysis of the vibration transfer function of the torsional beam and the experimental verification, an optimal scheme is determined, and the problem of the rear drum sound is solved.
引文
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[3]武新峰,雷勇军,李家文.基于有限元分析的复杂结构弹性振动传递函数建模[J].振动与冲击,2012(11):57-61+77.
[4]张栋,康菲.传递路径分析方法在车内轰鸣声问题上的应用[J].农业装备与车辆工程,2015(5):59-63.
[5]颜伏伍,郑灏,卢炽华,等.微型客车轰鸣噪声源的识别与控制[J].汽车工程,2015(4):446-450.
[6]王永,张永利.轿车内后排噪声控制的研究[J].机电工程技术,2008(4):48-51+110.
[7]周权,包伟,徐艳平,等.基于动刚度和模态应变能的某车NVH性能改善研究[J].汽车科技,2013(6):56-62.
[8]李玲,田率,康菲,等.某非承载式SUV车内噪声问题的分析[J].噪声与振动控制,2015,35(4):85-88.
[9]廖抒华,苏海亮.扭力梁优化分析及动特性研究[J].机械设计与制造,2015(4):74-76+80.
[2]王志亮,刘波,王磊.轿车轰鸣声产生机理与分析方法研究[J].噪声与振动控制,2008,28(2):79-81.
[3]武新峰,雷勇军,李家文.基于有限元分析的复杂结构弹性振动传递函数建模[J].振动与冲击,2012(11):57-61+77.
[4]张栋,康菲.传递路径分析方法在车内轰鸣声问题上的应用[J].农业装备与车辆工程,2015(5):59-63.
[5]颜伏伍,郑灏,卢炽华,等.微型客车轰鸣噪声源的识别与控制[J].汽车工程,2015(4):446-450.
[6]王永,张永利.轿车内后排噪声控制的研究[J].机电工程技术,2008(4):48-51+110.
[7]周权,包伟,徐艳平,等.基于动刚度和模态应变能的某车NVH性能改善研究[J].汽车科技,2013(6):56-62.
[8]李玲,田率,康菲,等.某非承载式SUV车内噪声问题的分析[J].噪声与振动控制,2015,35(4):85-88.
[9]廖抒华,苏海亮.扭力梁优化分析及动特性研究[J].机械设计与制造,2015(4):74-76+80.