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Analysis of Load Characteristic and Contact Patch Characteristic of Support Insert Run-Flat Tire under Zero-Pressure Condition

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Abstract

Support insert run-flat tire is a kind of safety tire based on common tire structure. It has the advantages of simple structure, easy disassembly and strong bearing capacity. However, when driving under zero-pressure condition, it can not meet the requirements of heavy load, high mobility and long-distance. Aiming at this problem, the finite element model is established. The load and contact patch characteristics of the model are simulated by ABAQUS. The radial stiffness curve and the contact pressure distribution under zero-pressure are obtained. The results show that the radial stiffness curve presents a certain nonlinearity in the sidewall loading stage. When the insert contacts the tire, it is approximately linear. The contact pressure distribution cloud diagram under zero-pressure condition shows that there is warpage. The tire test bench was set up and the relevant test scheme was formulated. The radial stiffness curve and the footprint of the support insert run-flat tire under zero-pressure condition were obtained. The research results show that the simulation and test results are in good agreement. This research is of great significance to the performance analysis of whole support insert run-flat tire under zero- pressure condition.

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Abbreviations

f n :

normal force (N)

K n :

normal contact stiffness (N/m)

D :

the clearance between the contact node and the target plane position (m)

τ crit :

critical force (N)

μ :

coefficient of friction

F :

contact pressure (N)

τ eq :

equivalent shear force (N)

a, b :

shear force (N)

f t :

tangential force (N)

K t :

tangential stiffness (N/m)

α e :

elastic deformation of the contact point with respect to the target surface (m)

SIRFT:

Support insert run-flat tire

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Acknowledgement

This work was supported by the National Natural Science Foundation of China (Nos. 51605215), the China Postdoctoral Science Foundation (Nos. 2019T120450), the Qing Lan Project, Research Foundation of Nanjing Institute of Technology (CKJA201906).

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Authors and Affiliations

  1. Nanjing Research Institute for Agricultural Mechanization (NRIAM) of National Ministry of Agriculture and Rural Affairs, 100 Liuying Avenue, Nanjing, 210014, China

    Liguo Zang & Chongyou Wu

  2. School of Automobile and Rail Transportation, Nanjing Institute of Technology, Nanjing, 211167, China

    Liguo Zang & Xingyu Wang

  3. College of Automotive Engineering, Jilin University, Changchun, 130025, China

    Fei Teng

  4. School of Automotive and Traffic Engineering, Jiangsu University, Zhenjiang, 212013, China

    Shaoqing Yang

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  1. Liguo Zang
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  2. Xingyu Wang
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Correspondence to Liguo Zang.

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Zang, L., Wang, X., Wu, C. et al. Analysis of Load Characteristic and Contact Patch Characteristic of Support Insert Run-Flat Tire under Zero-Pressure Condition. Int.J Automot. Technol. 22, 1141–1151 (2021). https://doi.org/10.1007/s12239-021-0101-8

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  • DOI: https://doi.org/10.1007/s12239-021-0101-8

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