滚动轮胎胎噪与其胎面接地压力分布特征关系

The relationship between tire noise and ground pressure distribution characteristics of rolling tires

作为弹性体的轮胎在汽车行驶过程中产生的胎噪与其和地面接触时相互作用的力学特征密切相关,研究轮胎滚动时的接地压力分布特征有助于解析轮胎胎噪的发声。为此,本文基于8款不同胎噪的子午线轮胎,进行了轮胎滚动时的接地压力分布特征实验,获得了滚动轮胎接地压力分布云图及相关力学特征参数值;同时,通过对力学特征参数值等相关实验据后处理分析后建立了滚动轮胎接地压力特征参数与轮胎胎噪值间关联关系的数学方程。结果表明,不同滚动胎噪的轮胎在其滚动接地压力分布图上有着明显区别,特别是轮胎胎面中心区域;基于所筛选的轮胎滚动接地压力分布特征参数构建的轮胎胎噪数学方程可用于估算轮胎滚动时的胎噪值,并揭示了相关特征参数与轮胎胎噪间的正负效应关系。研究结果对于研发低胎噪轮胎有着一定参考价值。

The tire noise generated by an elastic body during vehicle operation is closely related to the mechanical characteristics of its interaction with the ground.Studying the distribution characteristics of ground pressure during tire rolling can help to analyze the sound generation mechanism of tire noise.Therefore,tests on the distribution characteristics of ground pressure during tire rolling based on 8 radial tires with different tire noise levels were conducted,and the ground pressure distribution map and related mechanical characteristic parameter values of rolling tires were obtained.At the same time,a mathematical equation for the correlation between the ground pressure characteristic parameters of rolling tires and tire noise values was established through post-processing analysis of relevant experimental data such as mechanical characteristic parameter values.The relevant results indicate that the rolling ground pressure distribvotions of tires with different rolling tire noise have significant differences,especially in the central area of the tire tread,which has the most significant impact on the tire noise value of rolling tires.The tire noise mathematical equation based on the selected characteristic parameters of tire rolling contact pressure distribution can be used to estimate the tire noise value during tire rolling,and reveal the positive and negative relationship between the relevant characteristic parameters and tire noise.The relevant research results have certain guiding significance for the development of low tire noise tires.