Acoustically induced stress analysis of center fuselage skin panels of a basic training aircraft using statistical energy analysis

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Date

2009

Author

Kurtoğlu, İlker

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Two sample statistical energy analysis (SEA) models are generated for a section of the fuselage panel of an aircraft, namely the uniform panel model which includes the frames and stringers, and the ribbed panel model in which the frames and stringers are smeared into the skin. Turbulent boundary layer (TBL) excitation is used as the primary acoustic excitation source. Stress levels are estimated from the average velocity data of the panels. The stress results are found comply with those obtained by the AGARD method. Effect of radiation from panels to exterior and interior of the sample skin panel as well as the pressurization of the skin panels are investigated separately to analyze their effects on the stress levels. The method is then used in the analysis of center fuselage skin panels on a basic training aircraft. Two models are generated for the aircraft analysis, namely the complete aircraft model and the simplified model which excludes the wings and the empennage. In addition to TBL, propeller noise is used as the primary acoustic excitation source. The effects of the wings and the empennage on the stress levels in the center fuselage skin panels are also investigated along with the radiation from panels to the exterior and interior of the aircraft and pressurization of the pilot cabin.

Subject Keywords

Mechanical engineering., Aircraft.

URI

http://etd.lib.metu.edu.tr/upload/12610698/index.pdf
https://hdl.handle.net/11511/18557

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Graduate School of Natural and Applied Sciences, Thesis

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Citation Formats

İ. Kurtoğlu, “Acoustically induced stress analysis of center fuselage skin panels of a basic training aircraft using statistical energy analysis,” M.S. - Master of Science, Middle East Technical University, 2009.