HYDROPLANING SIMULATION OF A TIRE IN THIN WATER USING FEM AND AN ESTIMATION METHOD AND ITS APPLICATION TO SKID NUMBER ESTIMATION

作者：Jeong J Y; Jeong H Y^*

来源：International Journal of Automotive Technology, 2013, 14(2): 325-331.

DOI：10.1007/s12239-013-0036-9

• Hydroplaning
• FEM
• Thin water
• Skid number
• Skid resistance

To simulate the hydroplaning of a tire, many analytical studies have been performed using commercial explicit FE (Finite Element) codes such as MSCDYTRAN and LS-DYNA. However, most previous studies on this subject have addressed simulation of hydroplaning for water more than 5 mm deep. Additionally, because a great number of Eulerian elements and Lagrangian elements are typically used to analyze hydroplaning and because multiple analyses should be performed for various water depths, long CPU times are required. In this study, it was found that the traction force and the lift and drag forces between the tire and the road surface could be easily estimated for water shallower than 5 mm using an exponential function based on tire rolling FE simulation results. Furthermore, changes in skid resistance, expressed as SN (skid number), could be estimated for various water depths and vehicle speeds using the method proposed in this study, and the results were proven to be in good agreement with results obtained using the ASTM E274 Pavement Friction Tester.

• 出版日期2013-4-1