The analysis of stone trapping in tire tread for various road conditions

The present project plans out a novel study to identify the consequences of stone trapping in tire tread using ANSYS finite element analysis (FEA) method with an aim to provide insights on how stone trapping in tire tread could have an influence on the safety of road users.

A tire tends to trap stones in its tread pattern when the vehicle is on a move. Stone trapping causes harmful effect such as affecting the tire balance due to uneven tread wear of tread portion. Therefore, this study is necessary to be conducted since it affects the safety of road users. The objective of this study is to simulate stone trapping performance under various tire tread patterns and road conditions as well as assessing the performance of tires with stones trapped. A simulation method using ANSYS was done to evaluate how stone trapping reacts on tire tread patterns under different road conditions. The parameters set for the road conditions were dry and wet road surfaces while the tire models chosen were the symmetrical tire, asymmetrical tire, and directional tire. The 3D computer-aided design (CAD) model were created using SolidWorks and Fusion360 software. ANSYS finite element analysis (FEA) method was used to perform the static structural simulation on the 3D CAD models. Performance analysis namely tire inflation analysis and steady state rolling analysis were conducted by evaluating the total deformation, Von-Mises stress and equivalent elastic strain. From the results obtained, it was found that the total deformation, Von-Mises stress and equivalent elastic strain are higher when there is stone trapped for all tread pattern types. Thus, it is deduced that stone trapping in tire grooves would have an impact on the lifespan of the tire. Apart from that, this study found that the directional tread pattern results in the least performance drop while the symmetrical tread pattern provides the least wear and tear in stone trapped condition. Lastly, this research paper would provide an insight on how stone trapping in tire tread could have an influence on the safety of road users and lifespan of the tire.

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