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• W1668969991 abstract "․ In Lee**ABSTRACT To reduce the vibration levels, additional dissipation elemen ts such as dry friction dampers are sometimes integrated into bladed disk assembly. In this study, forced response analysis systems for a tuned bladed disk with friction dampers were developed and verified. For the efficient nonlinear vibration analysis, multi-harmonic balanced method and cyclic b oundary condition were used. Also, mode shapes obtained using fictitious mass method were used to describe the motion of the structures with the concentrated structural nonlinearity, friction damper. The relative convergence of fictitious mass and traditional unconstrained modes were compared. 초 록 블레이드 디스크에는 진동 저감을 위해 종종 마찰 감쇠기가 같은 부가적인 감쇠 요소가 부착된다. 마찰 감쇠기가 있는 블레이드 디스크의 강제 진동 해석 시스템이 개발 및 검증되었다. 비선형 진동 해석 방법인 다중 조화 방법과 주기 구조물의 효율적인 해석을 위한 주기 경계 조건이 사용되었으며 집중된 구조 비선형성인 마찰 감쇠기가 있는 구조물의 거동을 모사하기 위하여 가상 질량법으로 얻어진 모드 형상이 사용되었다. 이러한 모드와 일반적인 고유 모드의 상대적인 수렴성이 비교되었다.Key Words: Bladed Disk(블레이드 디스크), Friction Damper(마찰 감쇠기), Macroslip Model(매크로 슬립 모델), Forced Response(강제 응답), Multi-harmonic Balanced Method(다중 조화 방법), Fictitious Mass Method(가상질량법)1. 서 론 항공우주 분야에서 사용되는 대표적인 터보 기계에는 항공기 제트 엔진과 액체 로켓 엔진의 터보펌프가 있다. 제트 엔진에서 공기는 팬과 압축기를 통과하며 압축이 되고 연소실에서 연료와 섞여 연소를 하게 된다. 연소된 가스의 일부" @default.
• W1668969991 created "2016-06-24" @default.
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• W1668969991 date "2010-01-01" @default.
• W1668969991 modified "2023-09-27" @default.
• W1668969991 title "Forced Response Analyses of a Bladed Disk with Friction Dampers" @default.
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