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|Title:||Skid resistance and hydroplaning analysis of rib truck tire||Authors:||CAO CHANGYONG||Keywords:||Skid resistance, hydroplaning, rib truck tire, FSI, numerical simulation, wet pavement||Issue Date:||9-Jul-2010||Citation:||CAO CHANGYONG (2010-07-09). Skid resistance and hydroplaning analysis of rib truck tire. ScholarBank@NUS Repository.||Abstract:||Traffic crashes and the associated injuries and fatalities remain a significant problem for transportation professionals. The relationship between skid resistance and roadway safety has long been recognized by transportation agencies and concern has grown with the number of accidents occurring in wet pavement conditions. It is well documented that a pavement with high skid resistance properties can be a significant factor in reducing the likelihood of a crash. Inadequate skid resistance can lead to higher incidences of skid-related crashes. Considering its importance, research on pavement skid resistance had started since 1920s and most of them mainly focused on two aspects: to measure and predict wet pavement skid resistance accurately, and to develop strategies to increase skid resistance of wet pavements. Compared with the large amount of experiments and measurements on skid resistance, however, understanding in skid resistance mechanism has not improved much over the past century because it is hampered by the lack of development in the theoretical, analytical or numerical models that can explain and analyze skid resistance. This results in the reliance of empirical relationships in skid resistance prediction. It is noted that it is still not possible to predict the traction performance of a tire-road system based on the various tire and surface variables. Indeed, there is, as yet, no agreement as to how to quantify many of these variables in a meaningful way. It is clear that there is a great deal of definitive work yet to be done in this field. The main objective of this research is to simulate the skid resistance and hydroplaning phenomenon of rib truck tires and explore the effect of different affecting factors on them, which has the potential to shed some new light on this problem. The scope of this research mainly consists of the following three parts: to develop a Fluid Structure Interaction numerical model suitable for hydroplaning and skid resistance of rib truck tires; to evaluate the hydroplaning performance of wide-base truck tires under different operation conditions; and to simulate and predict skid resistance of rib truck tires under different operation conditions. In this research, an effective three dimensional FSI numerical model, considering the interactions among tire, water and pavement, was developed to analyze the hydroplaning phenomenon of wide-base truck tires. The verification of the FSI model using the experimental data indicated that the proposed models can be used to simulate truck hydroplaning phenomenon and to predict truck hydroplaning speeds satisfactorily. Several cases were simulated and discussed, which involved different wheel loads, tire inflation pressures and water film thickness on pavement surface. The extended FSI simulation model involving friction contact was employed to simulate the skid resistance of rib truck tire in this research. The proposed model was also verified against the measurements of skid resistance from rib truck tires. The effects of tread depth, tire groove width, position and number of tire grooves, water depth, inflation pressure, wheel load and sliding speed on skid resistance were then studied. It had given a better insight than experiments which could not supply information of detailed velocity and hydrodynamic pressure distribution to researcher. The findings and conclusions from this research are summarized in the last chapter. Finally, the recommendation and outlook for future research are also given.||URI:||http://scholarbank.nus.edu.sg/handle/10635/20415|
|Appears in Collections:||Master's Theses (Open)|
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