An Experimental Study on the Vibration of Rubber Mounts for Naval Shipboard Equipments

AbstractMost of the naval shipboard equipments strongly require isolati on devices to keep their performance and durability from severe noise and vibration loading. The rubber mount is well-known as one of most effective way to isolate major equipments from noise and vibration. The performance of the rubber mount is determined by characteristics of shock stiffness and vibration stiffness and the frequency range of in terest is up to several Kilo Hz in navy vessels. In this study, an vibration experiment method for the rubber mount has been developed as a foundation work for assessing dynamic stiff ness up to high frequency. Also experiments for a typical rubber mount has been carried out and the results has been discussed. ※Keywords: Rubber mount(고무마운트), Isolation(절연), Naval shipboard equipments(함정탑재장비), Dynamic stiffness(동적강성), High frequency(고주파) 1. 서론 함정에 탑재되는 장비는 선체의 진동 및 충격에 견디어야 하며 그 성능을 발휘해야할 뿐 아니라, 접수일: 2009년 3월 2일, 승인일: 2009년 3월 25일✝교신저자: hylee@cnu.ac.kr, 042-821-6626 발생되는 진동이 선체를 통하여 수중으로 방사되는 것을 감소시킴으로써 피탐성을 최소화하여야 한다. 탄성마운트는 이러한 진동 및 충격의 전달을 감소시키기 위한 목적으로 선체와 탑재 장비 사이에 설치하는 것으로서, 특히 방사소음을 줄이기 위해서는 일반적으로 고무마운트가 사용되고 있으며 그 성능(전달률)은 강성 특성에 의해 결정