Acoustic topology optimization of sound absorbing materials directly from subdivision surfaces with isogeometric boundary element methods

Chen, L., Lu, C., Lian, H., Liu, Z. , Zhao, W., Li, S., Chen, H. and Bordas, S. P.A. (2020) Acoustic topology optimization of sound absorbing materials directly from subdivision surfaces with isogeometric boundary element methods. Computer Methods in Applied Mechanics and Engineering, 362, 112806. (doi:10.1016/j.cma.2019.112806)

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Abstract

This paper presents an acoustic topology optimization approach using isogeometric boundary element methods based on subdivision surfaces to optimize the distribution of sound adsorption materials adhering to structural surfaces. The geometries are constructed from triangular control meshes through Loop subdivision scheme, and the associated Box-spline functions that generate limit smooth subdivision surfaces are employed to discretize the acoustic boundary integral equations. The effect of sound-absorbing materials on the acoustic response is characterized by acoustic impedance boundary conditions. The optimization problem is formulated in the framework of Solid Isotropic Material with Penalization methods and the sound absorption coefficients on elements are selected as design variables. The potential of the proposed topology optimization approach for engineering prototyping is illustrated by numerical examples.

Item Type:Articles
Additional Information:Financial supports from the National Natural Science Foundation of China (11702238, 51904202, 11901578), and Nanhu Scholars Program for Young Scholars of XYNU are acknowledged. We thank the financial support of Intuitive modeling and SIMulation platform (IntuiSIM) (PoC17/12253887) grant by Luxembourg National Research Fund. Haibo Chen appreciates the support of the National Natural Science Foundation of China (NSFC) under Grant No. 11772322.
Status:Published
Refereed:Yes
Glasgow Author(s) Enlighten ID:Liu, Dr Zhaowei
Authors: Chen, L., Lu, C., Lian, H., Liu, Z., Zhao, W., Li, S., Chen, H., and Bordas, S. P.A.
Subjects:Q Science > QA Mathematics
T Technology > TA Engineering (General). Civil engineering (General)
College/School:College of Science and Engineering > School of Engineering > Infrastructure and Environment
Journal Name:Computer Methods in Applied Mechanics and Engineering
Publisher:Elsevier
ISSN:0045-7825
ISSN (Online):1879-2138
Published Online:20 January 2020

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