Journal of Jilin University(Engineering and Technology Edition) ›› 2025, Vol. 55 ›› Issue (3): 811-819.doi: 10.13229/j.cnki.jdxbgxb.20230592

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Analysis of uniform distribution characteristics of contact pressure of TWEEL tires

Dang LU(),Xiao-fan WANG,Hai-dong WU()   

  1. College of Automotive Engineering，Jilin University，Changchun 130022，China
  • Received:2023-06-12 Online:2025-03-01 Published:2025-05-20
  • Contact: Hai-dong WU E-mail:ludang@jlu.edu.cn;wuhd@jlu.edu.cn

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Abstract:

In order to further study the contact pressure distribution characteristics of non-pneumatic tires， a reverse analysis of TWEEL was carried out， the finite element model of which was established and verified by tests. Based on finite element analysis， the influence of the main components of TWEEL— shear band and spokes on the uniform distribution characteristics of contact pressure was analyzed. The results show that the great equivalent axial stiffness and small shear stiffness of the shear band can make the shear deformation more easily， which is the key point of design for TWEEL to achieve uniform distribution of contact pressure. The small radial compressive stiffness of the spokes allows TWEEL to be a top-loader and have a better bearing capacity， thus can reduce the influence of the load transferred by the spokes in the contact patch on the contact pressure distribution. The large tensile stiffness of the spokes is conducive to increase the contact area， and ensures that the TWEEL has a uniform and low contact pressure distribution. The results of the study provide an important reference for the structural design and optimization of non-pneumatic tires.

Key words: vehicle engineering, non-pneumatic tire, finite element method, contact pressure, top-loader, classical laminate theory

CLC Number: 

  • U463.34

Fig.1

Reverse analysis and finite element modeling of the non-pneumatic tire"

Table 1

Material characteristic parameters of each part of the non-pneumatic tire"

结构密度/（kg·m-3）C10C20C30泊松比
支撑体1 1506.991617.550.495
胎面1 1102.05-0.850.420.495
剪切层1 1002.12-0.610.980.495

Fig.2

Triaxial stiffness simulation boundary conditions of the TWEEL"

Fig.3

PCR tire stiffness test machine"

Fig.4

Comparison of triaxial stiffness curves between simulation and test"

Fig.5

Comparison of pressure cloud diagram in contact patch between simulation and test"

Fig.6

Effect of design parameters on equivalent stiffness of the shear band"

Fig.7

Shear band compression simulation"

Fig.8

Shear strain distribution cloud diagram in contact patch of the shear band"

Fig.9

Effect of equivalent stiffness on shear strain of the shear band"

Fig.10

Effect of axial stiffness of shear band on contact pressure distribution"

Fig.11

Effect of shear stiffness of shear band on contact pressure distribution"

Fig.12

Tensile/compressive stiffness curve of spoke"

Fig.13

Spoke force analysis of the non-pneumatic tire"

Fig.14

Circumferential distribution of the normalized spoke force vertical component"

Fig.15

Effect of spoke compressive stiffness on contact pressure distribution"

Fig.16

Effect of spoke characteristics on the circumferential distribution of spoke elongation deformation"

Fig.17

Cloud diagram of vertical loading Simulation"

Fig.18

Relationship between the length of contact patch and the maximum elongation deformation of spoke"

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