Optimization of Sound Transmission Loss of a Composite Rectangular Plate with Infinite Baffle

Nouri, A.; Astaraki, S.

Authors

Shahid Sattary University of Science and Technology

Abstract

In this paper, optimization of the sound transmission loss of finite rectangular anisotropic laminated composite plate with simply supported boundary conditions has been developed to maximize transmission loss. Appropriate constraints were imposed to prevent the occurrence of softening effect due to optimization. For this purpose, optimization process was incorporated into comprehensive finite element software. The transmission loss (TL) obtained from the numerical solution was compared with those of other authors indicated good agreement. The discrete frequencies have been chosen based upon the sound transmission class with A-weighting constant. Several traditional composite materials have been studied and the results have shown that in the mass control region, the optimization of stacking sequence and optimal thickness has not been an effective contribution to improve the transmission loss. The results also show that, the lamina thickness optimization has an important effect on improving the transmission loss, but the advantage of low weight composite material is compromised by optimization.

Keywords

Article Title [Persian]

Optimization of Sound Transmission Loss of a Composite Rectangular Plate with Infinite Baffle

Authors [Persian]

A. nouri
S. Astaraki

Shahid Sattary University of Science and Technology

Abstract [Persian]

Keywords [Persian]

Optimization
Transmission Loss
Baffle
Composite Panel

References

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Journal of Aerospace Science and Technology

Optimization of Sound Transmission Loss of a Composite Rectangular Plate with Infinite Baffle

References

References

Volume 11, Issue 2
October 2017
Pages 53-63

Optimization of Sound Transmission Loss of a Composite Rectangular Plate with Infinite Baffle

References

References

Volume 11, Issue 2October 2017Pages 53-63

Volume 11, Issue 2
October 2017
Pages 53-63