整体式汽车驱动桥壳体振动噪声优化数值研究
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- 英文论文题名：Numerical Study on Vibration and Noise Optimization of Dependent Axle
- 论文作者：夏元烽 ; 胡成太 ; 杨宪武 ; 李宏成 ; 田雄
- 英文论文作者：Xia Yuanfeng~(1 ; 2) Hu Chengtai~(1 ; 2) Yang Xianwu~(1 ; 2) Li Hongcheng~(1 ; 2) Tian Xiong~(1 ; 2) 1.Changan Auto Global R&D Center ; Chongqing ; 401120 2.State Key Laboratory of Vehicle NVH and Safety Technology ; Chongqing ; 401120
- 年：2013
- 作者机构：长安汽车工程研究院;汽车噪声振动和安全技术国家重点实验室;
- 论文关键词：整体式驱动桥 ; 拓扑优化 ; ATV ; 板块贡献量
- 英文论文关键词：Dependent axle ; Topological optimization ; ATV ; Panel contribution
- 会议召开时间：2013-11-26
- 会议录名称：2013中国汽车工程学会年会论文集
- 英文会议录名称：Proceedings of 2013 SAE-China Congress
- 语种：中文
- 分类号：U463.218.5
- 学会代码：QCGC
- 会议名称：2013中国汽车工程学会年会
- 会议地点：中国北京
- 主办单位：中国汽车工程学会
- 学会名称：中国汽车工程学会
- 页数：6
- 文件大小：976k
- 原文格式：O
- 会议级别：全国
摘要
本文建立了驱动桥壳体有限元模型,分析了驱动桥壳体2000 Hz以内的模态密度。运用模态应变能和拓扑优化分析方法,找出驱动桥壳体刚度薄弱区,并通过增加加强筋来减少模态密度。另外,用强迫振动分析计算了单位激励力下的壳体振动响应,并结合边界元和ATV法,计算了驱动桥壳体近场声压级和板块贡献量。,增加加强筋后的壳体辐射噪声得到了有效抑制。最后,通过试验论证了增加壳体加强筋和后端盖厚度有利于减小驱动桥壳体辐射噪声。
A Finite Element model for dependent axle of a rear wheel drive vehicle is established.Natural frequency of the axle below 2 000 Hz is calculated.The weakness of the axle is found by modal strain energy analysis and topological optimization method,and the modal density of the axle is decreased by increasing ribs.The force vibration analysis is used to calculate the response of the axle under unit force.The sound pressure and panel contribution is calculated by BEM and ATV method,and the sound pressure is controlled by increasing ribs.Finally,the test proves that it is benefit for decreasing radiation noise by increasing ribs and cover's thickness.
A Finite Element model for dependent axle of a rear wheel drive vehicle is established.Natural frequency of the axle below 2 000 Hz is calculated.The weakness of the axle is found by modal strain energy analysis and topological optimization method,and the modal density of the axle is decreased by increasing ribs.The force vibration analysis is used to calculate the response of the axle under unit force.The sound pressure and panel contribution is calculated by BEM and ATV method,and the sound pressure is controlled by increasing ribs.Finally,the test proves that it is benefit for decreasing radiation noise by increasing ribs and cover's thickness.
引文
[1]David P Schankin,Zhaohui Sun.Integration of Independent Front Axles for Gear Mesh Energy[J]. Paper SAE 2007-01-2240.
[2]Dan Ryberg,Hamid Mir.Development of an Experimental FRF-Based Substructuring Model to Forward Predict the Effects of Beam Axle Design Modifications on Passenger Vehicle Axle Whine[J].Paper SAE 2007-01-2237.
[3]Lee Yuejun.Axle Gear Mesh Force Prediction, Correlation and Reduction[J].Paper SAE 2007- 01-2230.
[4]Lee Sang kwon,Go Sung kyu.Identification and ??Reduction of Gear Whine Noise of the Axle System in a Passenger Van[J].Paper SAE 2005-01-2302.
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[6]喻凡,林逸.汽车系统动力学[M].北京:机械工业出版社,2005.
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[8]Yang Dai.A Topographically Structural Optimization Methodology for Improving Noise Radiation in Transaxles [J].Paper SAE 2007-01-2287.
[2]Dan Ryberg,Hamid Mir.Development of an Experimental FRF-Based Substructuring Model to Forward Predict the Effects of Beam Axle Design Modifications on Passenger Vehicle Axle Whine[J].Paper SAE 2007-01-2237.
[3]Lee Yuejun.Axle Gear Mesh Force Prediction, Correlation and Reduction[J].Paper SAE 2007- 01-2230.
[4]Lee Sang kwon,Go Sung kyu.Identification and ??Reduction of Gear Whine Noise of the Axle System in a Passenger Van[J].Paper SAE 2005-01-2302.
[5]MD/MSC Nastran 2011 help,2011.
[6]喻凡,林逸.汽车系统动力学[M].北京:机械工业出版社,2005.
[7]李增刚.Nastran快速入门与实例[M].北京:国防工业出版社,2007.
[8]Yang Dai.A Topographically Structural Optimization Methodology for Improving Noise Radiation in Transaxles [J].Paper SAE 2007-01-2287.