轮胎纵滑非稳态特性测量方法研究  

Study on the Measurement Method of Longitudinal Slip Non-steady Tire Dynamics

作　　者：赵永坡[1] 孙晖云[1] 李飞[1] 景立新 刘振国 王晗 Zhao Yongpo;Sun Huiyun;Li Fei;Jing Lixin;Liu Zhenguo;Wang Han(Great Wall Motor Company Limited,Baoding 071000;CATARC Automotive Test Center(Tianjin)Co.,Ltd.,Tianjin 300300)

机构地区：[1]长城汽车股份有限公司,保定071000 [2]中汽研汽车检验中心(天津)有限公司,天津300300

出　　处：《中国汽车》2023年第9期54-59,共6页China Auto

摘　　要：为解决轮胎纵滑非稳态特性的高精度测量行业难题,本文结合国际先进测试机构的经验,提出更合理的纵向滑移率正弦扫频测量法。首先,通过物理模型与理论推导,引入纵向松弛长度概念来表征轮胎纵滑非稳态特性。其次,分析现有刚度法、定频法存在的不足,并进行扫频法的原理推导与试验设计。然后,使用MTS Flat Trac CT+高速轮胎六分力试验台进行扫频法的纵向松弛长度测试;同时,以刚度法为参考进行扫频法的精度验证,对比显示两种方法的测量值非常接近,两者偏差在8%以内。最后得出结论:扫频法更加省时省力,可替代刚度法进行轮胎纵滑非稳态特性的合理准确测量。In order to solve the problem of high-precision measurement of longitudinal non-steady tire dynamics,this paper combines the experience of advanced foreign testing institutions to propose a more reasonable frequency sweep method.Firstly,through the physical model and theoretical derivation,the longitudinal relaxation length is introduced to characterize non-steady tire dynamics.Secondly,to overcome shortcomings of the existing stiffness method and fixed frequency method,the frequency sweep method is derived and designed.Then,the longitudinal relaxation length test is carried out on MTS Flat Trac CT+tire force test bench using the frequency sweep method.At the same time,its accuracy is verified with the stiffness method as a reference,comparisons show the results of these two methods are very close,with the deviation within 8%.Finally,it is concluded that the frequency sweep method is more time-saving and labor-saving,and can replace the stiffness method for high-precision measurement of longitudinal non-steady tire dynamics.

关 键 词：纵向松弛 轮胎非稳态特性 轮胎模型 

分 类 号：TQ3[化学工程]