A Study on the Characteristics of Dynamic Vibration Absorber with Coil Spring and Oil Damper

J. Ocean Eng. Technol. 1988;2(1):170-175.

코일스프링과 오일댐퍼를 가지는 동흡진기의 특성에 관한 연구

김광식,안찬우

한양대학교 정밀기계공학과,동아대학교 기계공학과

Keywords: dynamic vibration absorber, coil spring, oil damper, harmonic motion

핵심용어: 동흡진가, 코일스프링, 오일댐퍼, 조화운동

Abstract

A study on the dynamic vibration absorber with coil spring and oil damper was carried out both theoretically and experimentally. A main mass is attached to a foundation using coil spring and oil damper. A harmonic motion was applied to the foundation. The effects of the dynamic vibration sbsorber are theoretically summarized in graphs, and tested on a vibratory model for the isolation of actual mechanical vibration. As a result, the first resonance amplitude ratio increased and the second resonance amplitude ratio decreased as the absorber spring constant increased. When the absorber mass increase, the first resonance amplitude ratio is decreased and the second resonace amplitude ratio is increased.