轮胎力学特性仿真高精度有限元建模方法研究

doi:10.19562/j.chinasae.qcgc.2022.10.010

Abstract

Abstract:

In order to enhance the tire finite element simulation accuracy and better meet the requirements of high-precision virtual sample delivery， a tire reverse analysis method is proposed. First， the section profile is acquired by 3D scanning of a real tire， which is then cut along radial direction to obtain a piece of tire section with certain thickness. Next， the thin tire section is put onto the print paper of tire section profile obtained by 3D scanning and make both section profile well coincide， which is then scanned to get a section picture of tire material layout as real profile， with which and designed profile acquired from tire manufacturer， two 3D tire model is generated by rotating section profile around tire center. Then both real tire test and finite element simulation on both tire models with real and designed profiles respectively are carried out under static condition. Finally， a comparative simulation on the static mechanics characteristics of tires with real and designed profiles under different tire pressures is conducted. The results show that the simulation accuracies of radial， lateral and longitudinal stiffness of tire with real profile reach 99.2%， 97.9% and 98.2%， i.e. 4.3， 4.6 and 7.4 percentage points higher than that of designed profile respectively， but the torsional stiffness of tires with two different profiles has little difference. Under all different tire pressures， the stiffness of tire with designed profile in all different directions always higher than that of real profile and they all increase with the rise of tire pressure.

Key words: tire mechanical properties, finite element simulation, tire profile

Dang Lu,Wenhao Yang,Haidong Wu,Nanshi Chen,Jian Cheng,Zhenwei Zhang. Research on High-Accuracy Finite Element Modeling Method for Tire Mechanics Characteristics Simulation[J].Automotive Engineering, 2022, 44(10): 1556-1562.

Figures/Tables 27

References 22

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项目	仿真/（N·mm^-1）	试验/（N·mm^-1）	精度/%
设计轮廓	252.5	240.2	94.9
实际轮廓	238.3	240.2	99.2

项目	仿真/（N·mm^-1）	试验/（N·mm^-1）	精度/%
设计轮廓	102.2	95.8	93.3
实际轮廓	97.8	95.8	97.9

项目	仿真/（N·mm^-1）	试验/（N·mm^-1）	精度/%
设计轮廓	186.7	170.9	90.7
实际轮廓	173.9	170.9	98.2

项目	仿真/（N·rad^-1）	试验/（N·rad^-1）	精度/%
设计轮廓	60.5	58.2	96.1
实际轮廓	60.7	58.2	95.7

胎压	0.21 MPa	0.25 MPa	0.35 MPa
设计轮廓	199.0	225.4	296.4
实际轮廓	186.0	213.1	274.2

Research on High-Accuracy Finite Element Modeling Method for Tire Mechanics Characteristics Simulation

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References 22

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