Development of system to provide information for avioding overturn based on crosswind fluctuation acting on moving vehicle

2014 Fiscal Year Final Research Report

• Project/Area Number: 25560162
• Research Category: Grant-in-Aid for Challenging Exploratory Research
• Allocation Type: Multi-year Fund
• Research Field: Social systems engineering/Safety system
• Research Institution: Kyoto University
• Principal Investigator: SHIRATO Hiromichi 京都大学, 工学(系)研究科(研究院), 教授 (70150323)
• Co-Investigator(Kenkyū-buntansha): YAGI Tomomi 京都大学, 工学研究科, 教授 (30293905) ; HATTORI Hiroshi (30576236)
• Project Period (FY): 2013-04-01 – 2015-03-31
• Keywords: 横風 / 横転 / 規制風速 / 短期風況予測 / 閾値超過確率 / オーバーシュート / 横力 / ヨーイングモーメント

Outline of Final Research Achievements

In order to assure the safety of a moving vehicle for overturning due to crosswinds, this study aims to develop a system to provide an information of safety driving speed to a truck driver before entering severe wind condition. It was found that: (1) the upcrossing rate of relative wind speed for an moving vehicle depends sensitively on the relative wind direction, and the rate increases in case of against relative wind direction. (2) When a vehicle encounters sudden crosswind, the side force on a vehicle shows quasi-static response which is determined relative wind speed and direction in each instance. On the contrary, there is significant overshoot in the yawing moment response. (3) The short-term wind speed prediction is developed by soft computing technique, which enables to predict average wind speed in several minutes future with a certain level of accuracy.

Free Research Field

風工学，構造工学