考虑轴承波纹度的燃料电池车用旋涡风机振动特性分析

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摘要通过分析滚动轴承结构特点，利用施加滚子轮廓线方法建立考虑轴承波纹度滚动轴承的多体动力学模型；将风机壳体及转轴进行柔性化，建立旋涡风机刚柔耦合的多体动力学模型；分析旋涡风机振动激励源与风机及轴承不同结构参数下振动特性。结果表明，轴承游隙存在会引起转频2倍频成分振动，且随游隙增加2倍频处振幅逐渐增加；波纹度存在，会产生对应波纹度阶次的高频成分振动，实际工况下高频成分会激发壳体模态引起壳体共振，影响燃料电池汽车的乘坐舒适性。

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	左曙光
	王哲
	吴旭东
	胡清
	韦开君
	何慧娟

关键词 ：旋涡风机, 刚柔耦合, 滚子轴承, 波纹度, 轴承游隙

Abstract：Through the analysis of the structure characteristics of rolling bearing,using the method of applying roller contour line, a multi-body dynamics model of rolling bearing considering the waviness was established. Arigid-flexible coupling dynamic model of the blower by making the shell and shaft flexible was built.Vortex blower vibration excitation source wassanalyzed, andthe vibration response under different structural parameters were aslo analyzed.Results indicate that,the existence of the bearing clearance will cause the vibration of the second harmonic frequency and with the increase of clearance ,theamplitude of second harmonic frequency component increase gradually.As a result of the waviness,the high frequency component of vibrationcorresponded towaviness weregenerated.The high frequency component can stimulate the mode of the shell and cause resonance then reduce the ride comfort of FECV.

Key words： vortex blower rigid-flexible coupling roller bearing waviness bearing clearance

收稿日期: 2014-04-15 出版日期: 2015-08-25

引用本文:

左曙光，王哲，吴旭东，胡清，韦开君，何慧娟. 考虑轴承波纹度的燃料电池车用旋涡风机振动特性分析[J]. 振动与冲击, 2015, 34(16): 14-18.
ZUO Shu-guang，WANG Zhe，WU Xu-dong，HU Qing，WEI Kai-jun，HE Hui-juan. Analysis of Fuel cell vehicle regenerative blower vibration characteristics considering bearing waviness. JOURNAL OF VIBRATION AND SHOCK, 2015, 34(16): 14-18.

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http://jvs.sjtu.edu.cn/CN/ 或 http://jvs.sjtu.edu.cn/CN/Y2015/V34/I16/14

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