Journal of Jilin University(Engineering and Technology Edition) ›› 2023, Vol. 53 ›› Issue (12): 3305-3313.doi: 10.13229/j.cnki.jdxbgxb.20220093

   

UniTire tire model including in⁃plane dynamic characteristics

Kong-hui GUO(),Shi-qing HUANG,Hai-dong WU(),Dang LU   

  1. State Key Laboratory of Automotive Simulation and Control，Jilin University，Changchun 130022，China
  • Received:2022-01-25 Online:2023-12-01 Published:2024-01-12
  • Contact: Hai-dong WU E-mail:guokh@jlu.edu.cn;wuhd@jlu.edu.cn

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Abstract:

The tire low-frequency handling model and the high-frequency durability model were unified， and the UniTire tire model including in-plane dynamic characteristics was proposed. The steady-state UniTire is the zero-frequency output of the tire dynamic system. When the frequency of the tire motion input signal is infinite， the output of the wheel center force is zero. Using these as boundary condition， the transfer characteristics of the tire dynamic system are established. Considering that in the simulation of the vehicle virtual proving ground （VPG）， the load history of the wheel center is mainly affected by the rigid ring modes of the tire， that is， the in-plane frequency is less than 100 Hz， and the out-of-plane frequency is less than 60 Hz. Higher frequency components contribute to the load analysis of the wheel center indistinctively， so a second-order transfer model that satisfies the boundary conditions is established. Finally， using typical tire dynamic test data， the tire model parameter identification and test verification are carried out. The comparison results show that the proposed model can accurately express the in-plane tire dynamic characteristics.

Key words: vehicle engineering, durability model, tire, dynamic characteristics, broadband

CLC Number: 

  • U463.34

Fig.1

Diagrams of rigid ring modes in different directions"

Table 1

Test data of rigid ring modes in different directions"

振动模式阶次频率/Hz模态阻尼/%
面内转动R081.770.068
面内移动R197.350.044
面外移动T047.200.021
面外扭动T161.400.029

Fig.3

Self-power spectrum of wheel center vertical force under different speeds and loads"

Fig.4

Self-power spectrum of wheel center longitudinal force under different speeds and loads"

Fig.2

Tire drum test bench"

Fig.5

Equivalent road height and inclination"

Fig.6

Basic curve of the cleat and the formation of equivalent height and equivalent inclination"

Fig.7

Comparison of curve superimposed equivalent road surface and test data when the load is 2940 N"

Fig.8

Comparison of curve superimposed equivalent road surface and test data when the load is 4704 N"

Fig.9

Tire vertical rigid ring model"

Fig.10

In-plane rigid ring model"

Fig.11

Comparison of simulation results and test data when v=30 km/h， fz =2940 N"

Fig.12

Comparison of simulation results and test data when v=30 km/h， fz =4704 N"

Fig.13

Comparison of simulation results and test data when v=60 km/h， fz =2940 N"

Fig.14

Comparison of simulation results and test data when v=60 km/h， fz =4704 N"

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