Should a Vehicle Always Deviate to the Tire Blowout Side?—A New Tire Blowout Model With Toe Angle Effects
Should a Vehicle Always Deviate to the Tire Blowout Side?—A New Tire Blowout Model With Toe Angle Effects
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DOI：
10.1115/1.4051034
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发表时间：
2021-04
影响因子：
1.7
通讯作者：
Ao Li;Yan Chen;Xinyu Du;Wen-Chiao Lin
中科院分区：
文献类型：
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作者：
Ao Li;Yan Chen;Xinyu Du;Wen-Chiao Lin
作为一种严重的轮胎故障，轮胎在行驶过程中爆胎会严重威胁车辆的稳定性和道路安全。在文献中建立了爆胎模型，以得出车辆总是偏离爆胎一侧的结论。然而，这一结论在本文中被证明是不准确的，因为现有的轮胎爆胎模型在很大程度上忽略了一个重要的因素。脚趾角作为地面车辆上应用广泛的基本设置，可以为正常行驶提供预先设定的、对称的轮胎侧向力。然而，当轮胎爆胎时，不同的脚趾角度设置会以不同的方式影响车辆的运动。本文首次在轮胎爆胎模型中明确考虑了胎趾角的影响，并将其纳入轮胎爆胎模型。针对不同的爆胎位置、行驶姿态和传动系结构，分析了不同的脚趾角设置对轮胎摩擦力和车辆运动变化的影响。通过高保真CARSIM仿真结果和试车试验结果，验证了所建立的考虑胎趾角的爆胎模型。仿真和实验结果都表明，车辆可能不会偏离爆胎侧，这取决于脚趾角度设置和驾驶操作。此外，实验结果还验证了所提出的爆胎模型能够准确地评估爆胎对车辆动力学的影响。
As a severe tire failure, tire blowout during driving can significantly threaten vehicle stability and road safety. Tire blowout models were developed in the literature to conclude that a vehicle always deviates to the tire blowout side. However, this conclusion is proved to be inaccurate in this paper, since one important factor was largely ignored in the existing tire blowout models. Toe angle, as a basic and widely applied setup on ground vehicles, can provide preset and symmetric lateral tire forces for normal driving. However, when tire blowout occurs, different toe angle setups can impact vehicle motions in different ways. For the first time, the toe angle is explicitly considered and integrated into a tire blowout model in this paper. For different tire blowout locations, driving maneuvers, and drivetrain configurations, the impacts of different toe angle setups on the variations of tire friction forces and vehicle motions are analyzed. The developed tire blowout model with toe angles is validated through both high-fidelity carsim simulation results and experimental results of a scaled test vehicle. Both simulation and experimental results show that a vehicle may not deviate to the tire blowout side, depending on the toe angle setups and driving maneuvers. Moreover, the experimental results also validate that the proposed tire blowout model can accurately evaluate the tire blowout impacts on vehicle dynamics.