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Evaluation of the effect of stopping selected frames on noise in the cabin of a propeller airplane

  • Environmental Acoustics. Noise and Vibration
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Abstract

A unified approach is proposed to solve vibration problems for stiffened plates, shells, and other arbitrary stiffened structures. The approach is applicable under the condition that independent solutions for the stiffened structure and the stiffening elements are known in the form of explicit expressions determining generalized displacements through generalized forces. The proposed universal equation is used to solve the problem of deterministic vibrations of a closed cylindrical shell with “smeared” stringers and irregular discrete frames. The solution is used to estimate the effect of noise suppression achieved in the cabin of a propeller airplane by stopping some of the frames positioned near the propeller.

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Authors and Affiliations

  1. Central Aerohydrodynamics Institute, Moscow Research Complex, ul. Radio 17, Moscow, 107005, Russia

    B. M. Efimtsov & L. A. Lazarev

Authors
  1. B. M. Efimtsov
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  2. L. A. Lazarev
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Correspondence to B. M. Efimtsov.

Additional information

Original Russian Text © B.M. Efimtsov, L.A. Lazarev, 2015, published in Akusticheskii Zhurnal, 2015, Vol. 61, No. 4, pp. 512–521.

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Efimtsov, B.M., Lazarev, L.A. Evaluation of the effect of stopping selected frames on noise in the cabin of a propeller airplane. Acoust. Phys. 61, 466–475 (2015). https://doi.org/10.1134/S106377101504003X

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  • DOI: https://doi.org/10.1134/S106377101504003X

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