A Comparative Study on Acoustic Optimization and Analysis of CLDPlate in a Cavity Using ESO and GA
Joint Authors
Zhang, Dongdong
Wang, Shuwen
Zheng, Ling
Source
Issue
Vol. 2018, Issue 2018 (31 Dec. 2018), pp.1-16, 16 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2018-03-19
Country of Publication
Egypt
No. of Pages
16
Main Subjects
Abstract EN
An acoustic radiation model of a cavity with a flexible plate treated with constrained layer damping (CLD) is developed by a combination of finite element method (FEM) and boundary element method (BEM).
An acoustic topology optimization model is established with the objective of minimizing sound radiation power at specific modal frequency and design variables defined as locations of CLD treatments.
The evolutionary structural optimization (ESO) method and genetic algorithm (GA) are employed to search optimal CLD configurations.
Sound power sensitivity for CLD/plate is derived to determine search direction in ESO optimization procedure.
The optimal CLD layouts for the flexible plate with two different boundary conditions are obtained and analyzed.
Computational time, optimal layouts, and minimum sound power obtained using ESO and GA are compared.
The results demonstrate effectiveness of the two methods, and ESO is more efficient to obtain deterministic and more practical optimal CLD material layouts for minimizing sound radiation power.
The influences of CLD materials thickness and exciting force locations on optimal results obtained using ESO are discussed in detail.
It is shown that the optimal rejection ratio varies with thicknesses of CLD materials and distribution of normal velocity of the flexible plate.
Variation trend of the optimal rejection ratio is opposite for the two boundary conditions.
American Psychological Association (APA)
Zhang, Dongdong& Wang, Shuwen& Zheng, Ling. 2018. A Comparative Study on Acoustic Optimization and Analysis of CLDPlate in a Cavity Using ESO and GA. Shock and Vibration،Vol. 2018, no. 2018, pp.1-16.
https://search.emarefa.net/detail/BIM-1215419
Modern Language Association (MLA)
Zhang, Dongdong…[et al.]. A Comparative Study on Acoustic Optimization and Analysis of CLDPlate in a Cavity Using ESO and GA. Shock and Vibration No. 2018 (2018), pp.1-16.
https://search.emarefa.net/detail/BIM-1215419
American Medical Association (AMA)
Zhang, Dongdong& Wang, Shuwen& Zheng, Ling. A Comparative Study on Acoustic Optimization and Analysis of CLDPlate in a Cavity Using ESO and GA. Shock and Vibration. 2018. Vol. 2018, no. 2018, pp.1-16.
https://search.emarefa.net/detail/BIM-1215419
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-1215419