Establishment of lug excitation force identification method by using rigid ring model and clarification of vibration phenomena of agricultural vehicles

2019 Fiscal Year Final Research Report

• Project/Area Number: 17K06244
• Research Category: Grant-in-Aid for Scientific Research (C)
• Allocation Type: Multi-year Fund
• Section: 一般
• Research Field: Dynamics/Control
• Research Institution: Ube National College of Technology
• Principal Investigator: Fujita Katsuhide 宇部工業高等専門学校, 機械工学科, 教授 (50390498)
• Co-Investigator(Kenkyū-buntansha): 齊藤 俊 山口大学, 大学院創成科学研究科, 教授 (10162207)
• Project Period (FY): 2017-04-01 – 2020-03-31
• Keywords: 動的設計

Outline of Final Research Achievements

In order to identify lug excitation force, the agricultural tire is modeled by the three-dimensional rigid ring model. The shaft displacement and the shaft force during rolling motion are measured three-dimensionally by rolling test. The lug excitation force in longitudinal, vertical and lateral direction are identified from the measured data. The characteristics of the lug excitation force and shaft force are investigated, and the correlation between these characteristics and the vibration characteristics of the tire are researched. Further, the transfer characteristics between lug excitation force (as input) and shaft force (as output) are investigated, and the influence of vibration characteristics of the tire on transfer characteristics are clarified.

Free Research Field

工学

Academic Significance and Societal Importance of the Research Achievements

キャビン型農耕車両では，防振ゴムでキャビンを支える防振構造が採用されている．従って，防振ゴムの最適な配置や防振ゴムの剛性特性といった振動低減対策を検討するには，入力であるラグ起振力の特性を把握し，更にラグ起振力がタイヤを通してどの様に伝達されるかの伝達特性を把握することが重要となる．研究成果により伝達特性にもタイヤの振動特性が影響を及ぼすことが確認され，農耕車両の振動低減対策を検討する上で有用な知見が得られた．