TY - JOUR ID - 81584 TI - Optimization of Sound Transmission Loss of a Composite Rectangular Plate with Infinite Baffle JO - Journal of Aerospace Science and Technology JA - JAST LA - en SN - 1735-2134 AU - nouri, A. AU - Astaraki, S. AD - Shahid Sattary University of Science and Technology Y1 - 2017 PY - 2017 VL - 11 IS - 2 SP - 53 EP - 63 KW - optimization KW - Transmission Loss KW - Baffle KW - Composite Panel DO - N2 - 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. UR - https://jast.ias.ir/article_81584.html L1 - https://jast.ias.ir/article_81584_aef712abbb6baa436c221f66820e783d.pdf ER -