固有ベクトルを重み係数とした減衰寄与度を用いた三次元室空間内への吸音材の配置(機械力学,計測,自動制御)

概要

論文の詳細を見る
This paper deals with analysis for layout of sound absorbing materials in three-dimensional rooms using damping contributions with eigenvectors as weight coefficients. Elements of absorbing materials are modeled by 3D finite element, which having complex density and complex volume elasticity. By expanding the solution of complex eigenvalue problem with small parameter, equations of motion are derived using first order of asymptotic components. From the equations, contribution of damping elements on modal damping is derived in consideration of multiple modes. The sound absorbing materials are arranged in three-dimensional rooms according to this contribution and the components of eigenvectors at the evaluation points. The availability of this method is verified using an expansion type chamber.
2008-11-25