Solid-perforated panel layout optimization by topology optimization based on unified transfer matrix.
This paper presents a numerical method for the optimization of the sequencing of solid panels, perforated panels and air gaps and their respective thickness for maximizing sound transmission loss and/or absorption. For the optimization, a method based on the topology optimization formulation is proposed. It is difficult to employ only the commonly-used material interpolation technique because the involved layers exhibit fundamentally different acoustic behavior. Thus, an optimization method formulation using a so-called unified transfer matrix is newly proposed. The key idea is to form elements of the transfer matrix such that interpolated elements by the layer design variables can be those of air, perforated and solid panel layers. The problem related to the interpolation is addressed and bench mark-type problems such as sound transmission or absorption maximization problems are solved to check the efficiency of the developed method.
National Creative Research Initiatives Multiscale Design Center, Advanced Automobile Research Center, School of Mechanical and Aerospace Engineering, Seoul National University, 599 Gwanak-ro, Gwanak-gu, Seoul 151-742, Korea.
Yoon Jae
YJ
Kim
Yoon Young
YY
Kim
D000042:Absorption; D000162:Acoustics / Q000295:instrumentation*; D000388:Air; D004867:Equipment Design; D008962:Models, Theoretical; D009622:Noise / Q000517:prevention & control; D009716:Numerical Analysis, Computer-Assisted; D016062:Porosity; D013016:Sound