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- 저자 : Kailash Dhital(카일라시 디탈) (검색결과 1 건)
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Kailash Dhital(카일라시 디탈),Jae-Hung Han(한재흥),Yoon-Kyu Lee(이윤규) 한국소음진동공학회 2016 한국소음진동공학회 학술대회논문집 Vol.2016 No.4
The present study considers the usage of concentrated force to simulate panel flutter. This idea has been validated for studying the flutter of wing structure in subsonic flow, yet its application in the supersonic region remained to be explored. In that context, a simply supported panel subjected to forces, equivalent to aerodynamic force is used for studying supersonic panel flutter. The distributed aerodynamic force is approximated to few concentrated forces by taking numerical integration. The aeroelastic equation is formulated using classical small-deflection theory and piston theory in linear panel flutter whereas for emulated panel flutter the flutter equation is derived by replacing the pressure due to aerodynamic loading with pressure from concentrated loading. Finally, critical flutter frequency, critical dynamic pressure, and corresponding mode shape are found for emulated panel flutter and compared with linear panel flutter. Two important parameters, the number of concentrated forces and their location are discussed through numerical examples and optimization process respectively. So far, the flutter results acquired in this study are reasonable to explain the feasibility of reproducing panel flutter using concentrated forces.
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