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Relative pavement performance for dual and wide-based tyre assemblies using a finite element method

Casey, Dermot; Airey, Gordon; Grenfell, James

Authors

Dermot Casey

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GORDON AIREY GORDON.AIREY@NOTTINGHAM.AC.UK
Professor of Pavement Engineering Materials

James Grenfell



Abstract

There is a need to assess the realistic tire contact pressure created by a tire in contact with a pavement. The contact pressure is a function of tire type, axle loading, and tire inflation pressure (TiP). The research carried out considered dual tire and wide-based tire assemblies across a range of axle loading and TiP. These contact pressures were incorporated into a finite element package (CAPA-3D) and modelled on a simple pavement structure. The strains from this modelling were sorted to produce key strains associated with the mechanisms of surface distress, near surface distress, deep asphalt distress, and the subgrade. The main distress mechanisms were top down cracking, asphalt cracking/rutting, bottom-up fatigue cracking, and subgrade rutting. This gave a method to fairly compare the dual and wide-based tire assemblies with the same axle loading and TiP. The analysis gave interesting results for the different distress mechanisms of the pavement. The wide-based tire gives consistently higher shear strains for all the areas of distress investigated. There is great variation in surface and near surface shear strains due to the different combinations of axle loading and TiP. It is clear that the wide-based tire is a more damaging tire for all combinations of TiP and axle loading. It is also apparent that how these factors interact has a great influence on the damaging potential of a tire.

Citation

Casey, D., Airey, G., & Grenfell, J. (2017). Relative pavement performance for dual and wide-based tyre assemblies using a finite element method. Journal of Testing and Evaluation, 45(6), https://doi.org/10.1520/JTE20160589

Journal Article Type Article
Acceptance Date Jul 3, 2017
Online Publication Date Sep 29, 2017
Publication Date Nov 1, 2017
Deposit Date Mar 28, 2018
Publicly Available Date Mar 29, 2024
Journal Journal of Testing and Evaluation
Print ISSN 0090-3973
Electronic ISSN 1945-7553
Publisher ASTM International
Peer Reviewed Peer Reviewed
Volume 45
Issue 6
DOI https://doi.org/10.1520/JTE20160589
Keywords finite element method, tyre contact pressure, pavement performance
Public URL https://nottingham-repository.worktribe.com/output/965418
Publisher URL https://compass.astm.org/DIGITAL_LIBRARY/JOURNALS/TESTEVAL/PAGES/JTE20160589.htm

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