Sound transmission loss characteristics of sandwich aircraft panels: Influence of nature of core

Arunkumar, M.; Pitchaimani, Jeyaraj; Gangadharan, K. V.; Babu, MC Lenin

doi:10.1177/1099636216652580

Cited by 51 publications

(19 citation statements)

References 24 publications

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“…There have been several reported implementations and developments of the Rayleigh integral method [244][245][246][247][248][249][250][251][252][253][254], including vibro-acoustics [197,255,256]. Applications of the method include sandwich panels [257][258][259][260][261][262][263], engine or machine noise [203], electrostatic speaker [264] and transducers [52,265,266].…”

Section: The Rayleigh Integral Methodsmentioning

confidence: 99%

The Boundary Element Method in Acoustics: A Survey

Kirkup

2019

Applied Sciences

108

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The boundary element method (BEM) in the context of acoustics or Helmholtz problems is reviewed in this paper. The basis of the BEM is initially developed for Laplace’s equation. The boundary integral equation formulations for the standard interior and exterior acoustic problems are stated and the boundary element methods are derived through collocation. It is shown how interior modal analysis can be carried out via the boundary element method. Further extensions in the BEM in acoustics are also reviewed, including half-space problems and modelling the acoustic field surrounding thin screens. Current research in linking the boundary element method to other methods in order to solve coupled vibro-acoustic and aero-acoustic problems and methods for solving inverse problems via the BEM are surveyed. Applications of the BEM in each area of acoustics are referenced. The computational complexity of the problem is considered and methods for improving its general efficiency are reviewed. The significant maintenance issues of the standard exterior acoustic solution are considered, in particular the weighting parameter in combined formulations such as Burton and Miller’s equation. The commonality of the integral operators across formulations and hence the potential for development of a software library approach is emphasised.

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Section: The Rayleigh Integral Methodsmentioning

confidence: 99%

The Boundary Element Method in Acoustics: A Survey

Kirkup

2019

Applied Sciences

108

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“…The results suggest that spatially random irregularities in honeycomb core have considerable effect on the natural frequencies of sandwich panels. MP Arunkumar et al [93] found that, for a honeycomb core sandwich panel in due consideration to space constraint, better sound transmission characteristics can be achieved with lower core height. Also, observed that, for a honeycomb core sandwich panel, one can select cell size as the parameter to reduce the weight without affecting the sound transmission loss.…”

Section: Sandwichmentioning

confidence: 99%

Hybrid Sandwich Panels: A Review

Sandeep

Srinivasa

2020

International Journal of Applied Mechanics and Engineering

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A high specific stiffness, high specific strength, and tailoring the properties for specific application have attracted the attention of the researchers to work in the field of laminated composites and Sandwich structures. Rapid use of these laminated composites and Sandwich structures necessitated the development of new theories that suitable for the bending, buckling and vibration analysis. Many articles were published on free vibration of beams, plates, shells laminated composites and sandwich structures. In this article, a review on free vibration analysis of shear deformable isotropic beams, plates, shells, laminated composites and sandwich structures based on various theories and the exact solution is presented. In addition to this, the literature on finite element modeling of beams, plates, shells laminated composites and sandwich structures based on classical and refined theories is also reviewed. The present article is an attempt to review the available literature, made in the past few decades on free flexural vibration response of Fiber Metal laminated Composites and Sandwich panels using different analytical models, numerical techniques, and experimental methods.

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“…The STL of a sandwich panel depends on the characteristics of two surface layers, middle layer or core and supported boundary conditions. Arunkumar et al 13 studies the STL of a sandwich panel with a honeycomb core. The influences of the honeycomb shape and size on the STL at low and high frequencies are studied numerically.…”

Section: Introductionmentioning

confidence: 99%

Sound Transmission Loss of a Metal Panel With Rib Reinforcements and Pasted Damping

Xie¹,

Yuan²,

Shangguan³

2020

The International Journal of Acoustics and Vibration

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The sound transmission losses (STL) of a metal panel with rib reinforcement (MPRR) are studied by both an experimental method and a simulation approach. The experimental method and data processing technique for obtaining STL are presented. Six MPRRs with different number of rib reinforcement and different geometry size of rib reinforcement, and six MPRRs with different type of the pasted damping material are designed and anufactured, and their STL performances are investigated by experimental method. The calculation model for STL of a MPRR is proposed and the calculated STL are compared favorably with the experimental data, which validates the proposed model. The analytical methods and conclusions are instructive for the design and the tuning of STL of MPRRs.

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Sound transmission loss characteristics of sandwich aircraft panels: Influence of nature of core

Cited by 51 publications

References 24 publications

The Boundary Element Method in Acoustics: A Survey

The Boundary Element Method in Acoustics: A Survey

Hybrid Sandwich Panels: A Review

Sound Transmission Loss of a Metal Panel With Rib Reinforcements and Pasted Damping

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