주파수 전달함수를 이용한 신 포괄 곡선맞춤법

• Published in: Han-guk haeyang gonghak hoeji (Online) Vol. 23; no. 6; pp. 82 - 86
• Main Authors: 민천홍(Cheon-Hong Min), 박한일(Han-Il Park), 배수룡(Soo-Ryong Bae), 전재진(Jae-Jin Jeon)
• Format: Journal Article
• Language: Korean
• Published: 한국해양공학회 2009
• Subjects: 해양공학; Nonproportional damping 비비례 점성; Experimental modal analysis 실험모드해석; System identification 시스템추정; Frequency response function 주파수 전달함수; Curve-fitting 곡선맞춤; Structural vibration 구조진동
• ISSN: 1225-0767; 2287-6715

Several damping materials have been employed to reduce the vibration of structures. While it is important to estimate the damping matrix when analyzing damped composite structures using the finite element method (FEM), at present, there is no FEM program that can correctly estimate the damping matrix. In this paper, a new global curve-fitting method is proposed for identifying the system parameters of non-proportional damping structures using a frequency response function. An experimental test for a cantilever beam attached damping material was carried out to verify the performance of the method proposed in this study.