仿猫爪掌垫子午线轮胎胎冠设计

刘从臻; 李永强; 孙运芬; 谢孟雨; 徐成伟

doi:10.13433/j.cnki.1003-8728.20200323

仿猫爪掌垫子午线轮胎胎冠设计

doi: 10.13433/j.cnki.1003-8728.20200323

山东理工大学交通与车辆工程学院, 山东淄博 255000

基金项目:

山东省自然科学基金项目 51875327

国家自然科学基金项目 ZR2018LE010

详细信息

作者简介:
刘从臻(1979-), 副教授, 硕士生导师, 研究方向为轮胎力学性能分析与优化设计, lcz200811@163.com

中图分类号: U463.3
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- 文章访问数: 94
- HTML全文浏览量: 38
- PDF下载量: 26
- 被引次数: 0
出版历程
- 收稿日期: 2020-08-01
- 刊出日期: 2022-02-25

Crown Design of Radial Tire Bio-inspired by Cat Paw Pads

School of Transportation and Vehicle Engineering, Shandong University of Technology, Zibo 255000, Shandong, China

摘要

摘要: 为缓解轮胎抓地与磨损性能间的固有矛盾，以某205/55R16乘用车子午线轮胎为研究对象，对轮胎胎冠进行仿生设计。采用WALKWAY压力测试系统获取猫前爪动态接地特性，并配合3D激光扫描仪进行逆向拓扑。对猫爪掌垫横截面点云进行多项式拟合并采用相似原理对胎冠进行仿生设计。利用ABAQUS建立模型，对比仿生胎与样胎静载、制动、侧偏工况下接地面积与压力分布。结果表明：仿生轮胎设计可有效增大接地面积，降低峰值接地压力，改善轮胎偏磨损现象，实现轮胎抓地与磨损性能协同提升。
- 轮胎胎冠 /
- 仿生设计 /
- 接地性能 /
- 有限元分析
Abstract: In order to alleviate the inherent contradiction between tire grip and wear performance, a radial tire of a certain type of 205/55R16 passenger car was taken as the research object, and the tire crown was bionic designed in this paper. The dynamic grounding characteristics of cat′s paw were obtained by WALKWAY pressure test system, and the reverse topology was carried out with 3D laser scanner. Polynomial fitting is carried out on the cross-sectional point cloud of cat paw pad, and bionic design of tire crown is carried out with similarity principle. The finite element models of bionic tire and sample tire were built in ABAQUS and used to compare the ground contact area and pressure distribution between bionic tire and sample tire under static load, braking and cornering conditions. The results show that the bionic tire design can effectively increase the ground contact area, reduce the peak ground contact pressure, improve the tire eccentric wear phenomenon, and thus realize the synergistic improvement of tire grip and wear performance.
- tire crown /
- bionic design /
- grounding performance /
- finite element analysis

HTML全文

图 1 试验台原理图

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图 2 地面垂直反力变化曲线

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图 3 猫爪接地面积变化曲线

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图 4 猫前爪各部位反力变化曲线(1.34 m/s)

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图 5 点云处理过程

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图 6 猫爪掌垫点云横截面拟合曲线

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图 7 仿生胎冠弧设计示意图

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图 8 静态加载试验

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图 9 载荷-下沉量曲线

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图 10 静负荷下接地印迹形状

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图 11 轮胎静载接地压力分布

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图 12 轮胎制动接地压力分布

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图 13 样胎稳态侧偏接地压力分布

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图 14 仿生轮胎稳态侧偏接地压力分布

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表 1 加强筋材料属性

Rebar材料	杨氏模量/GPa	泊松比	密度/(kg·m^-3)	角度/(°)
1#带束层钢丝	105.9	0.29	7 800	66
2#带束层钢丝	105.9	0.29	7 800	114
胎体帘线层	5.25	0.30	1 350	0

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表 2 接地印迹试验与仿真数值

接地参数	试验值	仿真值	相对误差/%
长轴长度/mm	151.70	148.67	2.0
短轴长度/mm	117.04	114.19	2.4
印迹面积/cm²	156.73	150.96	3.7

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表 3 轮胎制动接地参数

方案	抓地力/N	接地压力/MPa	接地压力标准差/MPa	接地面积/cm²
样胎	3 511	0.682 70	0.139 72	151.93
仿生轮胎	3 537	0.609 40	0.129 03	155.32
差值/%	0.7	-10.8	-7.7	2.2

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表 4 轮胎稳态侧偏接地数据

侧偏角度	侧偏力/N			峰值接地压力/MPa			接地压力标准差/MPa			接地面积/cm²
侧偏角度	样胎	仿生轮胎	差值	样胎	仿生轮胎	差值	样胎	仿生轮胎	差值	样胎	仿生轮胎	差值
2°	626	631	0.8%	5.903 5	5.285 2	-10.5%	0.1272	0.118 6	-6.8%	148.87	152.60	2.5%
4°	1 190	1 207	1.4%	6.357 4	5.716 9	-10.1%	0.133 2	0.128 4	-3.6%	139.20	143.34	3.0%
6°	1 760	1 791	1.8%	6.793 9	6.031 1	-11.2%	0.160 4	0.154 1	-3.9%	144.19	149.34	3.6%
8°	2 086	2 134	2.3%	7.222 2	6.716 2	-7.0%	0.171 1	0.166 6	-2.6%	141.27	149.58	5.9%

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