@Article{icces.2023.010581,
AUTHOR = {Yanming Xu, Leilei Chen, Haojie Lian},
TITLE = {Acoustic	Topology	Optimization	of	Sound	Absorbing	Materials	Directly	 from	Subdivision	Surfaces	with	IGA-FEM/BEM},
JOURNAL = {The International Conference on Computational \& Experimental Engineering and Sciences},
VOLUME = {26},
YEAR = {2023},
NUMBER = {1},
PAGES = {1--1},
URL = {http://www.techscience.com/icces/v26n1/53897},
ISSN = {1933-2815},
ABSTRACT = {An	isogeometric coupling	algorithm	based	on	the	finite	element	method	and	the	boundary	element	method	
(IGA-FEM/BEM)	 is	 proposed	 for	 the	 simulation	 of	 acoustic	 fluid-structure	 interaction	 and	 structuralacoustic	 topology	 optimization	 using	 the	 direct	 differentiation	 method.	 The	 geometries	 are	 constructed	
from	triangular	control	meshes	through	Loop	subdivision	scheme.	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.	Numerical	examples	are	presented	to	
demonstrate	the	validity	and	efficiency	of	the	proposed	algorithm.},
DOI = {10.32604/icces.2023.010581}
}