• Title/Summary/Keyword: 기어진동

Search Result 284, Processing Time 0.027 seconds

A Coupled Lateral and Torsional FE Rotordynamic Analysis of Speed Increasing Geared Rotor-Bearing System (증속 기어 전동 로터-베어링 시스템의 횡-비틀림 연성 유한요소 로터다이나믹 해석)

  • 이안성;하진웅;최동훈
    • Journal of KSNVE
    • /
    • v.11 no.1
    • /
    • pp.82-88
    • /
    • 2001

  • In a transmission or geared rotor system a coupled phenomenon of lateral and torsional vibrations may occur due to the gear meshing effect. Particularly, in high speed or low vibration and low noise applications of geared rotor systems a coupled rotordynamic analysis is required to precisely predict their dynamic characteristics. In this paper a generalized finite element model of a gear pair element is developed, which actively couples the lateral and torsional vibrations due to the gear meshing effect. In the modeling the generalized forces due to the transmission error. geometrical eccentricities. and unbalances in the gear system are also considered. Then. using the developed gear pair element model a coupled unforced rotordynamic analysis is performed with a prototype 800 RT turbo-chiller rotor-bearing system having a hull-pinion speed increasing gear. Results show that the torsional vibration characteristics experience some changes due to the gear meshing and lateral dynamic coupling effect, but that they have no adverse effect and the lateral ones have no practical changes in an operating speed range.

  • PDF

A Study on the Noise.Vibration Characteristics of Differential Gear according to the Materials (차동기어의 재질별 진동.소음 특성에 관한 연구)

  • 최은오
    • Journal of the Korean Society of Manufacturing Technology Engineers
    • /
    • v.6 no.2
    • /
    • pp.67-75
    • /
    • 1997

  • The noise . vibration characteristics of Hypoid gears which were made from three seperate materials(SCM, TSCM, SNCM) under the identical process were investigated for the sake of durability improvement of differential gear compatible with low level noise gear set. For this study, we developed a rig experimental equipment which can perform close noise.vibration experiment of differential gear. Consequently, we could analyze the noise.vibration characteristics of final reduction gear by materials, and also we observed changes in both metallic structure and hardness according to the materials of pinion gear. In addition to this, the correlation between the vibration of the differential gear and the interior noise of the passenger vehicles was proved by analyzing the results of rig vibration experiment and field noise test.

  • PDF