HYDROPLANING SIMULATION FOR A TIRE IN THIN WATER USING FEM AND AN ESTIMATION METHOD, AND ITS APPLICATION TO SKID NUMBER ESTIMATION
- 주제(키워드) Hydroplaning; FEM; Thin water; Skid Number; Skid Resistance
- 발행기관 서강대학교 일반대학원
- 지도교수 정 현용
- 발행년도 2013
- 학위수여년월 2013. 2
- 학위명 석사
- 학과 및 전공 일반대학원 기계공학과
- 실제URI http://www.dcollection.net/handler/sogang/000000049676
- 본문언어 영어
- 저작권 정재용, 정현용
초록/요약
To simulate the hydroplaning of a tire, many analytical studies were performed using commercial explicit FE (Finite Element) codes such as MSC.DYTRAN and LS-DYNA. However, most of the previous studies dealt with hydroplaning simulation for water more than 5 mm deep. Additionally, as a great number of Eulerian elements and Lagrangian elements were used to analyze hydroplaning and multiple analyses should be performed for various water depths, they needed long CPU time. In this study, it was found that the traction force as well as 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, the 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 the experiment results using ASTM E274 (Pavement Friction Tester).
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