Development of Self-Excited Vibration Suppression System for Plain Journal Bearings Inversely Using Temperature-Viscosity Change

2015 Fiscal Year Final Research Report

• Project/Area Number: 25420079
• Research Category: Grant-in-Aid for Scientific Research (C)
• Allocation Type: Multi-year Fund
• Section: 一般
• Research Field: Design engineering/Machine functional elements/Tribology
• Research Institution: Muroran Institute of Technology
• Principal Investigator: KAZAMA Toshiharu 室蘭工業大学, 工学(系)研究科(研究院), 教授 (20211154)
• Co-Investigator(Kenkyū-buntansha): NARITA Yukihito 室蘭工業大学, 大学院工学研究科, 准教授 (90431519)
• Project Period (FY): 2013-04-01 – 2016-03-31
• Keywords: トライボロジー / 機械要素 / すべり軸受 / 流体潤滑 / 潤滑油 / 粘度

Outline of Final Research Achievements

The objective of this research is the development of hydrodynamic bearings to be able to suppress vibration and to reduce noise in a wide range of operating conditions, focusing mainly on the viscosity-temperature characteristics of a lubricating oil, controlling the viscosity of the oil by cooling and heating, and expressing an optimum pressure distributions in the oil film. The test journal bearing was developed to verify the feasibility of the idea.
The preliminary experiments including the cooling and heating characteristics of the Peltier devices mounted on the test bearing, the control characteristics of the temperature distributions, the expressing conditions of the self-acting vibration were conducted. Based on the experimental results, when the bearing bush was locally cooled and heated under the vibration conditions, we could find that the vibration was markedly suppressed.

Free Research Field

機械工学