3_2020_sen_12

Title of the article

VOLUMETRIC DAMAGEBILITY OF TRIBO-FATIGUE SYSTEM “CAR TIRE — ASPHALT CONCRETE” IN CONTACT INTERACTION AREA UNDER VARIOUS AXIAL LOADS ON TIRE
Authors

GRIBOVSKII Gleb V., Ph. D. Student, Belarusian State University, Minsk, Republic of Belarus, This email address is being protected from spambots. You need JavaScript enabled to view it.">This email address is being protected from spambots. You need JavaScript enabled to view it.
In the section TRIBO-FATIGUE SYSTEMS MECHANICS
Year 2020 Issue 3 Pages 95–101
Type of article RAR Index UDK 539.3 Index BBK  
DOI https://doi.org/10.46864/1995-0470-2020-3-52-95-101
Abstract Stress-strain state and volumetric damageability in contact vicinity of «car tire–asphalt concrete» tribo-fatigue system for the various combinations of internal pressure in the tire and axle load on the rim was considered. Stressstrain state of all system and volumetric damageability in contact area of tire and asphalt concrete for the various loads were calculated using finite-element modelling. In contact interaction vicinity was considered areas, where maximum stresses occur: asphalt concrete, tire tread and rubber under radial ply. Stress-strain analysis was considered using classical approach by maximum stress and tribo-fatigue approach by damaged volume. Values of maximum stress intensity and volumetric damageability on different values of radial load on the rim and internal pressure in tire are presented. Results of investigations show how values of maximum stress and volumetric damageability are changing by changing loads on car tire, where inner pressure increases from 0.65 to 0.85 MPa and radial load from 6 to 10 kN. A comparison of two different approaches for the analysis of stress-strain state of system elements has shown a greater effectiveness of the tribo-fatigue approach by damageability than the analysis by maximum stresses. The dependence of the volumetric damageability values on loads was more pronounced compared to the dependence of the maximum stress intensity, changes in which in some cases were haphazard when loads changed and did not reflect their influence on the stress-strain state.
Keywords

tribo-fatigue system, stress-strain state, computer simulation, damaged volume, volumetric damageability
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