Optimization on microlattice materials for sound absorption by an integrated transfer matrix method.
Materials with well-defined microlattice structures are superlight, stable, and thus bear great potential in sound absorption. An integrated transfer matrix method (TMM) is proposed to evaluate the sound absorbing efficiency of these lattice materials, in which a massive number of micropores are densely placed. A comparison between integrated TMM and conventional TMM reveals that the proposed approach offers better predictions on sound absorption of microlattice. This approach is then employed to optimize the microlattice material to determine the best pore and porosity that lead to maximum absorbing efficiency capability and minimum required thickness to attain a target sound absorption.
Department of Mechanical and Materials Engineering, The University of Western Ontario, London, Ontario N6A 5B9, Canada caixiaobing11@gmail.com, jyang@eng.uwo.ca.
Xiaobing
X
Cai
Department of Mechanical and Materials Engineering, The University of Western Ontario, London, Ontario N6A 5B9, Canada caixiaobing11@gmail.com, jyang@eng.uwo.ca.
Jun
J
Yang
School of Aerospace Engineering, Beijing Institute of Technology, Beijing 100081, People's Republic of China hugeng@bit.edu.cn.
Gengkai
G
Hu