境界要素法による固体の過渡衝撃音の研究

概要

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The analysis technique for problems concerning transient sounds radiated by impacted bodies is investigated by the boundary element method (BEM), and a general-purpose analysis program, which is available for any sound sources, is developed. The Laplace transformation of the Helmholtz equation is employed in the formulation of BEM. The analysis is first carried out in the Laplace transformed domain by using the boundary input values obtained by numerical Laplace transform. Then, the results in the time domain are obtained by numerical inverse Laplace transform. As a transient sound radiated by impacted bodies, transient acoustic radiation from a column and a cube impacted by a sphere are considered. The validity of these analytical results for time-dependent sound radiation is examined by comparing with the experimental results.
一般社団法人日本機械学会の論文
1995-05-25