适用于高频激励的面内轮胎动态模型

doi:10.13229/j.cnki.jdxbgxb20190068

摘要/Abstract

摘要：

为了合理表达轮胎在高频激励工况下的动态力学特性，建立了一种将轮胎连续物理结构离散化处理的轮胎动态模型。该模型将胎侧部分以及胎内压缩空气离散成一系列弹簧阻尼单元，带束部分离散成沿带束圆周方向均匀分布的多个质量点，质量点之间由代表带束拉伸和弯曲特性的弹性单元相连。在相邻质量点之间引入若干个无质量接触单元进行轮胎与路面之间接触力计算。利用TMPT试验数据对所建立的轮胎动态模型进行参数辨识和精度验证。对比结果表明，本文建立的轮胎动态模型不仅能够准确地表达轮胎静态力学特性，也能够很好地表达轮胎在典型不平路面上的高频动态力学特性。

关键词: 车辆工程, 轮胎, 高频动态模型, 离散化, 不平路面

Abstract:

In order to properly express the dynamic mechanical properties of tire under high-frequency excitation condition, a tire dynamic model is established, which discretizes the continuous physical structure of tire. The sidewall portion of the tire and the compressed air are discretized into a series of spring and damping units. The belt portion of the tire is discreted into a series of mass points which are uniformly distributed along the circumferential direction of the belt. The mass points are connected by elastic units that represents the tensile and bending properties of the belt. A number of massless contact elements between adjacent mass points are introduced for the calculation of contact forces in tire-road contact. The data of Tire Model Procedure Test (TMPT) is used for parameter identification and accuracy verification of the established tire dynamic model. The comparison results show that the tire dynamic model established in this paper can not only accurately express the static mechanical properties of the tire, but also express the high-frequency dynamic mechanical properties of the tire on typical uneven road surface well.

Key words: vehicle engineering, tire, high frequency dynamic model, discretization, uneven road

中图分类号:

U463.34

郭孔辉,黄世庆,吴海东. 适用于高频激励的面内轮胎动态模型[J]. 吉林大学学报(工学版), 2020, 50(1): 19-28.

Kong-hui GUO,Shi-qing HUANG,Hai-dong WU. In⁃plane dynamic tire model for high⁃frequency excitation[J]. Journal of Jilin University(Engineering and Technology Edition), 2020, 50(1): 19-28.

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参考文献 19

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阶次	频率/Hz	模态阻尼/%
R0	81.77	0.068
R1	97.35	0.044
R2	122.93	0.032
R3	149.47	0.024

垂向载荷/N	试验数据/(N?mm^-1)	仿真结果/(N?mm^-1)	误差/%
2 940	397.7	397	0.18
4 704	435	434.1	0.2
6 468	412	411.6	0.1