Analysis of the boundary layer noise transmitted through aircraft sidewalls

Maury, Cédric; Gardonio, Paolo; Elliott, Stephen J.

doi:10.2514/6.2001-2111

Cited by 2 publications

(1 citation statement)

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“…Research into the analysis of TBL noise transmission through aircraft sidewalls continues to be a major point of investigation. 14 While there has been much research into the design of adaptive structures capable of reducing noise transmission to the interior of an aircraft cabin, the design of such structures able to handle a range of boundary conditions while still reducing transmission has yet to be fully explored. A model capable of aiding in this design process cannot be based upon ideal boundary conditions alone.…”

Section: Introductionmentioning

confidence: 99%

Structural acoustic control of plates with variable boundary conditions: Design methodology

Sprofera

Cabell

Gibbs

et al. 2007

The Journal of the Acoustical Society of America

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A method for optimizing a structural acoustic control system subject to variations in plate boundary conditions is provided. The assumed modes method is used to build a plate model with varying levels of rotational boundary stiffness to simulate the dynamics of a plate with uncertain edge conditions. A transducer placement scoring process, involving Hankel singular values, is combined with a genetic optimization routine to find spatial locations robust to boundary condition variation. Predicted frequency response characteristics are examined, and theoretically optimized results are discussed in relation to the range of boundary conditions investigated. Modeled results indicate that it is possible to minimize the impact of uncertain boundary conditions in active structural acoustic control by optimizing the placement of transducers with respect to those uncertainties.

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Section: Introductionmentioning

confidence: 99%