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http://dx.doi.org/10.5050/KSNVN.2002.12.11.864

Planform Curvature Effects on the Stability of Coupled Flow/Structure Vibration  

Kim, Jong-Yun (한국과학기술원 기계공학과 항공우주전공)
Kim, Dong-Hyun (한국과학기술원 기계공학과 항공우주전공)
Lee, In (경상대학교 기계항공공학부)
Publication Information
Transactions of the Korean Society for Noise and Vibration Engineering / v.12, no.11, 2002 , pp. 864-872 More about this Journal
Abstract
In this study, the effect of planform curvature on the stability of coupled flow/structure vibration is examined in transonic and supersonic flow regions. The aeroelastic analysis for the frequency and time domain is performed to obtain the flutter solution. The doublet lattice method(DLM) in subsonic flow is used to calculate unsteady aerodynamics in the frequency domain. For all speed range, the time domain nonlinear unsteady transonic small disturbance code has been incorporated into the coupled-time integration aeroelastic analysis (CTIA). Two curved wings with experimental data have been considered in this paper MSC/NASTRAN is used for natural free vibration analyses of wing models. Predicted flutter dynamic pressures and frequencies are compared with experimental data in subsonic and transonic flow regions.
Keywords
TSD(Transonic Small-disturbance Code); Transonic; Flutter; Aeroelasticity; DLM(Doublet Lattice Method);
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