NONLINEAR AEROELASTIC ANALYSIS OF HIGH ASPECT RATIO WINGS CARRYING STORE IN INCOMPRESSIBLE STEADY FLOWS

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MOTAHARI FARD O.; SHOKROLLAHI S.; GOLPARVAR H.

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Paper Information

Journal: JOURNAL OF SOLID AND FLUID MECHANICS Year:2016 | Volume:6 | Issue:2 Page(s): 259-269

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Title

NONLINEAR AEROELASTIC ANALYSIS OF HIGH ASPECT RATIO WINGS CARRYING STORE IN INCOMPRESSIBLE STEADY FLOWS

Author(s)

MOTAHARI FARD O. | SHOKROLLAHI S. | GOLPARVAR H. | Issue Writer Certificate

Keywords

FLUTTERQ2

LIMIT CYCLE OSCILLATIONSQ1

LINEAR AEROELASTICQ1

NONLINEAR AEROELASTICQ1

Abstract

Today, the development of unmanned aircrafts with specific performance characteristics, Including UAVs which capable to fly at high altitude and long endurance is very regarded. In this paper, we have analyzed a NONLINEAR AEROELASTIC wing with a high aspect ratio with and without store (tank) which attached to the wing. Also, the aerodynamic model and structural model have been coupled in steady states. The equations of motion have obtained from Hamilton's principle and the Lagrange equations have acquired from three modesof “bending outside the plate", "bending inside the plate" and "torsion". First of all, we have examined the aeroelastic stability analysis “k” approach and effect has been studied for several important parameters. Then, by considering the non-linear terms in equations by using fourth order Rung -Kutta approach, we have studied the results of the simulation and noticed to some phenomena like LIMIT CYCLE OSCILLATIONS and Effect of geometric parameters on the amplitude of these fluctuations is discussed. The Nonlinear terms are structure and store types and aerodynamics flow have been studied in the linear modes. For solving the equations we have used Galerkin method. Also, the equations have governed in the domain time. By Comparing the results, acceptable accuracy of our modeling and undertaken analysis has observed.

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APA: Copy

MOTAHARI FARD, O., SHOKROLLAHI, S., & GOLPARVAR, H.. (2016). NONLINEAR AEROELASTIC ANALYSIS OF HIGH ASPECT RATIO WINGS CARRYING STORE IN INCOMPRESSIBLE STEADY FLOWS. JOURNAL OF SOLID AND FLUID MECHANICS, 6(2), 259-269. SID. https://sid.ir/paper/212675/en

Vancouver: Copy

MOTAHARI FARD O., SHOKROLLAHI S., GOLPARVAR H.. NONLINEAR AEROELASTIC ANALYSIS OF HIGH ASPECT RATIO WINGS CARRYING STORE IN INCOMPRESSIBLE STEADY FLOWS. JOURNAL OF SOLID AND FLUID MECHANICS[Internet]. 2016;6(2):259-269. Available from: https://sid.ir/paper/212675/en

IEEE: Copy

O. MOTAHARI FARD, S. SHOKROLLAHI, and H. GOLPARVAR, “NONLINEAR AEROELASTIC ANALYSIS OF HIGH ASPECT RATIO WINGS CARRYING STORE IN INCOMPRESSIBLE STEADY FLOWS,” JOURNAL OF SOLID AND FLUID MECHANICS, vol. 6, no. 2, pp. 259–269, 2016, [Online]. Available: https://sid.ir/paper/212675/en

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