서지주요정보
효과적인 구조물 동특성 변경에 의한 진동파워 전달 저감에 관한 연구 = A study on vibrational input power reduction using effective structural dynamic modification
서명 / 저자 효과적인 구조물 동특성 변경에 의한 진동파워 전달 저감에 관한 연구 = A study on vibrational input power reduction using effective structural dynamic modification / 선정욱.
저자명 선정욱 ; Sun, Jung-Woog
발행사항 [대전 : 한국과학기술원, 1999].
Online Access 원문보기 원문인쇄

소장정보

등록번호

8009513

소장위치/청구기호

학술문화관(문화관) 보존서고

MME 99030

휴대폰 전송

도서상태

이용가능

대출가능

반납예정일

초록정보

When a mechanical system having vibratory source is placed to a structure, vibrating force is transmitted and generating structure borne noise and vibration. Vibrational power transmission is an important concept to deal with this structure borne noise and vibration problem. The concept of vibrational power transmission is related with both the force and velocity of exciter and receiver. That means energy, transmitted through the coupling points, depends on the properties of exciter, receiver and isolator. To reduce structure borne noise and vibration, its vibrational power inflow from exciter to receiver should be reduced. In this thesis, using the concept of structural dynamic modification, vibrational power transmitting through connecting points of exciter and receiver is attempted to reduce. Two kinds of indexes are introduced to find a optimal point of structural dynamic modification. Those are Power Reduction Index which is the ratio of vibrational input power between pre- and post-modified receiver and Band Power Reduction Index which is the ratio of average of vibratonal input power within the interesting frequency band between pre- and post-modified receiver. The former index is used to find frequency band in which vibrational input power is reduced and the later is applied to find optimal structural dynamic modified point where the average vibrational input power becomes a minimum value. The properties of the two indexes are examined by simulation works. Using a practical experimental setup which has a d.c.motor and a plate structure, the predicted vibrational power variations are verified according to the structural dynamic modification of receiving structure. Finally in order to certify how much modification is effective in the receiving structure, its vibration level is measured and compared.

서지기타정보

서지기타정보
청구기호 {MME 99030
형태사항 vi, 104 p. : 삽도 ; 26 cm
언어 한국어
일반주기 저자명의 영문표기 : Jung-Woog Sun
지도교수의 한글표기 : 박윤식
지도교수의 영문표기 : Youn-Sik Park
학위논문 학위논문(석사) - 한국과학기술원 : 기계공학과,
서지주기 참고문헌 : p. 102-104
QR CODE qr code