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International Journal of Automotive Technology

, Volume 20, Issue 4, pp 801–812 | Cite as

Proper Radial Spokes of Non-Pneumatic Tire for Vertical Load Supporting by Finite Element Analysis

  • Ravivat Rugsaj
  • Chakrit SuvanjumratEmail author
Article
  • 7 Downloads

Abstract

This research aimed to develop the 3D finite element model of non-pneumatic tire (NPT) for designing the proper radial spoke. The NPT was cut using waterjet cutting technique to prepare the appropriate test specimens. The hyperelastic constitutive models were used to model the deformation behavior of these NPT components. The rebar elements were used to model steel belt layers of the non-pneumatic tire, while the tying equation was used to tie the degree of freedom between belt layers and rubber elements. The NPT model was assigned to contact the rigid surface at the load of 14, 16, 18, 20 and 22 kN. The deformation analysis result of NPT model was compared with the physical experiment which obtained the average error of 9.29 %. The vertical stiffness of the NPT model was 810.66 N/mm; therefore the error was 6.81 % when it was compared to the experimental result. The validated NPT model was then used to search for the proper spoke thickness. The spoke thickness of 5 mm was found to be the proper thickness which given the identical vertical stiffness as the pneumatic tire.

Key words

Finite element method Hyperelastic Non-pneumatic tire Vertical stiffness testing 

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Notes

Acknowledgement

This work was financial supported by Rubber Technology Research Center (RTEC), Mahidol University and the Thailand Research Fund (TRF) under the TRF Research Grant No. RDG60T0140.

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Copyright information

© KSAE 2019

Authors and Affiliations

  1. 1.Department of Mechanical Engineering, Faculty of EngineeringMahidol UniversityNakhon PathomThailand
  2. 2.Laboratory of Computer Mechanics for Design (LCMD), Department of Mechanical Engineering, Faculty of EngineeringMahidol UniversityNakhon PathomThailand

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