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Toward using tire-road contact stresses in pavement design and analysis

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dc.contributor.author De Beer, Morris
dc.contributor.author Maina, JW
dc.contributor.author Van Rensburg, Yvette
dc.contributor.author Greben, JM
dc.date.accessioned 2013-01-28T07:53:06Z
dc.date.available 2013-01-28T07:53:06Z
dc.date.issued 2012-10
dc.identifier.citation De Beer, M., Maina, J.W., Van Rensburg, Y. and Greben, J.M. 2012. Toward using tire-road contact stresses in pavement design and analysis. Tire Science and Technology Journal, vol. 40(4), pp. 246-271 en_US
dc.identifier.issn 0090-8657
dc.identifier.uri http://tiresciencetechnology.org/doi/abs/10.2346/tire.12.400403
dc.identifier.uri http://hdl.handle.net/10204/6428
dc.description Copyright: 2012 The Tire Society. This is an ABSTRACT ONLY. en_US
dc.description.abstract Optimization of road pavement design, especially towards the surface of the pavement, requires a more rational approach to modeling of truck tire-road contact stresses. Various road surfacing failures are given in this paper as examples, and it is shown that the traditional civil engineering tire model represented by a single uniformly distributed vertical contact stress of circular shape is inadequate to explain this type of surface failure. This paper therefore discusses the direct measurement of threedimensional (3D) tire pavement contact stresses using a flatbed sensor system referred to as the “Stress-In-Motion” (SIM) system. The SIM system (or device) consists of multiple conically shaped steel pins, as well as an array of instrumented sensors based on strain gauge technology. The test surface is textured with skid resistance approaching that of a dry asphalt layer. Full-scale truck tires have been tested since the mid-1990s and experience shows that 3D tire contact stresses are non-uniform and the footprint is often not of circular shape. It was found that especially the vertical shape of contact stress distribution changes, mainly as a function of tire loading. In overloaded/underinflated cases, vertical contact stresses maximize towards the edges of the tire contact patch. Higher inflation pressures at lower loads, on the other hand, result in maximum vertical stresses towards the center portion of the tire contact patch. These differences in shape and magnitude need to be incorporated into modern road pavement design. Four different tire models were used to represent a single tire type in order to demonstrate its effect on road pavement response of a typical South African pavement structure. Only applied vertical stress was used for the analyses. It was found that road surface layer life can reduce by as much as 94 percent as a result of simply using a different tire model on the same pavement structure. en_US
dc.language.iso en en_US
dc.publisher The Tire Society en_US
dc.relation.ispartofseries Workflow;10093
dc.relation.ispartofseries Workflow;9661
dc.subject Tires en_US
dc.subject Tire-road en_US
dc.subject Road pavement design en_US
dc.subject Strain Energy of Distortion en_US
dc.subject SED en_US
dc.subject Pavement structure en_US
dc.title Toward using tire-road contact stresses in pavement design and analysis en_US
dc.type Article en_US
dc.identifier.apacitation De Beer, M., Maina, J., Van Rensburg, Y., & Greben, J. (2012). Toward using tire-road contact stresses in pavement design and analysis. http://hdl.handle.net/10204/6428 en_ZA
dc.identifier.chicagocitation De Beer, Morris, JW Maina, Yvette Van Rensburg, and JM Greben "Toward using tire-road contact stresses in pavement design and analysis." (2012) http://hdl.handle.net/10204/6428 en_ZA
dc.identifier.vancouvercitation De Beer M, Maina J, Van Rensburg Y, Greben J. Toward using tire-road contact stresses in pavement design and analysis. 2012; http://hdl.handle.net/10204/6428. en_ZA
dc.identifier.ris TY - Article AU - De Beer, Morris AU - Maina, JW AU - Van Rensburg, Yvette AU - Greben, JM AB - Optimization of road pavement design, especially towards the surface of the pavement, requires a more rational approach to modeling of truck tire-road contact stresses. Various road surfacing failures are given in this paper as examples, and it is shown that the traditional civil engineering tire model represented by a single uniformly distributed vertical contact stress of circular shape is inadequate to explain this type of surface failure. This paper therefore discusses the direct measurement of threedimensional (3D) tire pavement contact stresses using a flatbed sensor system referred to as the “Stress-In-Motion” (SIM) system. The SIM system (or device) consists of multiple conically shaped steel pins, as well as an array of instrumented sensors based on strain gauge technology. The test surface is textured with skid resistance approaching that of a dry asphalt layer. Full-scale truck tires have been tested since the mid-1990s and experience shows that 3D tire contact stresses are non-uniform and the footprint is often not of circular shape. It was found that especially the vertical shape of contact stress distribution changes, mainly as a function of tire loading. In overloaded/underinflated cases, vertical contact stresses maximize towards the edges of the tire contact patch. Higher inflation pressures at lower loads, on the other hand, result in maximum vertical stresses towards the center portion of the tire contact patch. These differences in shape and magnitude need to be incorporated into modern road pavement design. Four different tire models were used to represent a single tire type in order to demonstrate its effect on road pavement response of a typical South African pavement structure. Only applied vertical stress was used for the analyses. It was found that road surface layer life can reduce by as much as 94 percent as a result of simply using a different tire model on the same pavement structure. DA - 2012-10 DB - ResearchSpace DP - CSIR KW - Tires KW - Tire-road KW - Road pavement design KW - Strain Energy of Distortion KW - SED KW - Pavement structure LK - https://researchspace.csir.co.za PY - 2012 SM - 0090-8657 T1 - Toward using tire-road contact stresses in pavement design and analysis TI - Toward using tire-road contact stresses in pavement design and analysis UR - http://hdl.handle.net/10204/6428 ER - en_ZA


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