High-speed 3D digital image correlation for rolling deformation of a tire sidewall and measuring dynamic contact patch length

Gao Xueliang; Zhuang Ye; Liu Shu; Fan Weiguang; Zhu Chengwei; Chen Qiang

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High-speed 3D digital image correlation for rolling deformation of a tire sidewall and measuring dynamic contact patch length

机译：轮胎侧壁滚动变形的高速3D数字图像相关性，测量动态接触贴片长度

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Tires play a vital role in a vehicle's operational stability, comfort, and security. However, due to the influence of test equipment and tire operating conditions, the perception of rolling tire characteristics is still in the stage of gradual improvement, especially the analysis of sidewall rolling deformation and dynamic contact peculiarities of tires/road interactions, which has restricted the analysis of rolling energy dissipation and the accurate observation of tire forces. In this paper, the high-speed stereo-vision system was created by high-speed cameras, and the relative rigid and flexible displacement, strain, and trajectory trend of marker points and the real-time global displacement field of the sidewall during the tire-rolling cycle were acquired utilizing the improved digital image correlation algorithm under different rolling velocities. Meanwhile, the periodic dissipation of the strain concentration region was observed, and the phenomenon of strain resonance appeared at the overlap of the periods. The relative flexibility strain and shear strain of the marker point were obtained on the plane element, which resulted in the relative flexibility major principle strain of the plane element, and then it achieved recognition of the leading and trailing points of the contact patch and the accurate measurement of dynamic contact patch length. (C) 2020 Optical Society of America

机译：轮胎在车辆的操作稳定，舒适和安全性中发挥着重要作用。然而，由于测试设备和轮胎操作条件的影响，滚动轮胎特性的感知仍处于逐步改善的阶段，特别是分析侧壁滚动变形和动态接触特性的轮胎/道路相互作用，这限制了轧制耗能分析及轮胎力的准确观察。在本文中，高速立体视觉系统由高速摄像机和标记点的相对刚性和柔性位移，应变和轨迹呈现出轮胎期间侧壁的实时全球位移场 - 利用不同滚动速度下利用改进的数字图像相关算法获取循环。同时，观察到应变浓度区域的周期性耗散，并且应变共振的现象出现在时期的重叠上。在平面元件上获得标记点的相对柔韧性应变和剪切应变，从而导致平面元件的相对柔韧性主要原理应变，然后实现了接触贴片的主导和后尾点的识别和准确的测量动态接触贴片长度。（c）2020美国光学学会

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来源
《Applied optics》 |2020年第5期|共10页
作者
Gao Xueliang; Zhuang Ye; Liu Shu; Fan Weiguang; Zhu Chengwei; Chen Qiang;
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作者单位

Jilin Univ State Key Lab Automot Simulat &

Control Changchun 130025 Jilin Peoples R China;

Jilin Univ State Key Lab Automot Simulat &

Control Changchun 130025 Jilin Peoples R China;

Jilin Univ Dept Ophthalmol Hosp 2 Changchun 130041 Jilin Peoples R China;

North China Vehicle Res Inst Dept Chassis Parts Beijing 100072 Peoples R China;

Jilin Univ State Key Lab Automot Simulat &

Control Changchun 130025 Jilin Peoples R China;

Jilin Univ State Key Lab Automot Simulat &

Control Changchun 130025 Jilin Peoples R China;

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High-speed 3D digital image correlation for rolling deformation of a tire sidewall and measuring dynamic contact patch length

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