峰值摩擦以上轮胎自持续振动的研究

IF 0.9 Q4 ENGINEERING, MECHANICAL
C. Lugaro, Y. Li, M. Alirezaei
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引用次数: 0

摘要

当轮胎在高于峰值摩擦的侧滑水平上运行时,可以观察到产生的力和力矩的大振动。在横向方向上,这些振动通常集中在接近50赫兹的频率,并显著影响轮胎产生的力。作为一个例子,高动态车辆机动与电子稳定程序控制系统在回路可以受到这种行为的影响。为了准确地再现这些操作条件下的轮胎响应,重要的是采用一个可以捕捉这种现象的模型。在分析非线性、不稳定系统和极限环现象的基础上,提出了一种理论,为振动源提供了物理背景。该理论还揭示了振动的频率和振幅如何受到轮胎物理特性和操作条件的影响。研究发现,最主要的特征是轮胎在摩擦峰值附近的稳态力响应形状、接触片质量、胎体阻尼和刚度。使用不同复杂程度的物理模型以及Simcenter轮胎MF-Tyre/MF-Swift商用轮胎软件模型进行仿真,验证了该理论,并演示了如何在仿真环境中再现振动。仿真结果与不同工况下的轮胎实测数据进行了比较,验证了所采用的理论和模型的正确性。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
A Study on Self-Sustained Vibrations of a Tire Operating above Peak Friction
When a tire operates at a side slip level above peak friction, large vibrations in the produced forces and moments are observed. In the lateral direction, these vibrations are typically centered at frequencies close to 50 Hz and significantly affect the force that is produced by the tire. As an example, high dynamics vehicle maneuvers with an electronic stability program control system in the loop can be affected by this behavior. To accurately reproduce the tire response in these operating conditions, it is important to employ a model that can capture this phenomenon. Based on analysis of nonlinear, unstable systems and limit cycle phenomenon, a theory is presented that provides a physical background for the source of vibrations. The theory also gives insight in how the frequency and amplitude of the vibrations are influenced by the tire physical characteristics and the operating conditions. It is found that the most dominant characteristics are the shape of the steady-state force response of the tire around peak friction, the contact patch mass, the carcass damping and stiffness. Simulations with physical models of different complexity levels, as well as with the commercial Simcenter Tire MF-Tyre/MF-Swift tire software model, validate the theory and demonstrate how the vibrations can be reproduced in a simulation environment. The simulation results are compared with tire measurements in different operating conditions, validating the exposed theory and employed models.
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来源期刊
Tire Science and Technology
Tire Science and Technology ENGINEERING, MECHANICAL-
CiteScore
2.10
自引率
0.00%
发文量
11
期刊介绍: Tire Science and Technology is the world"s leading technical journal dedicated to tires. The Editor publishes original contributions that address the development and application of experimental, analytical, or computational science in which the tire figures prominently. Review papers may also be published. The journal aims to assure its readers authoritative, critically reviewed articles and the authors accessibility of their work in the permanent literature. The journal is published quarterly by the Tire Society, Inc., an Ohio not-for-profit corporation whose objective is to increase and disseminate knowledge of the science and technology of tires.
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