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물로 연성된 두 직사각평판의 접수진동에 대한 수위의 영향
유계형(Cye-Hyoung Yoo),권대규(Tae-Kyu Kwon),정경훈(Kyeong-Hoon Jeong),이성철(seong-Cheol Lee) 대한기계학회 2003 대한기계학회 춘추학술대회 Vol.2003 No.4
The effect of water level on the free vibration of a partially water-filled two rectangular plates structure was investigated by experimental modal analysis and finite element analysis using. ANSYS computer program. Modal parameters of two rectangular plates coupled with water were obtained by means of experiment and the FEM solutions were compared with the experimental solutions to verify the finite element model. As a result, the comparison between the experiment and FEM results showed excellent agreement. The transverse vibration modes, in-phase and out-of-phase, were observed alternately in the fluid-coupled system. The effect of water level and water gap size on the fluid-coupled natural frequency were investigated. It was found that the natural frequency of the partially water-filled two rectangular plates are not proportional to the water level, but depend on mode number of plates.