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논문 기본 정보

저자정보
(Hansung University)
저널정보
한국소음진동공학회 한국소음진동공학회논문집 한국소음진동공학회논문집 제34권 제5호(통권 280호)
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    초록·키워드

    The NDIF method is a numerical analysis technique that was developed for high-precision eigenvalue analysis of arbitrarily shaped acoustic cavities. It is characterized by a limitation where the precision of higher-order eigenvalues increases, but low-order eigenvalues are not extracted as the number of nodes increases. In a recent study, a practical method was developed to overcome this limitation in acoustic cavities with rigid-wall boundaries. In this study, the practical method was applied and extended to acoustic cavities with mixed boundaries, comprising rigid-wall and open boundaries. To verify the validity and accuracy of the proposed method, example studies were conducted on both a rectangular acoustic cavity with a known exact solution and an arbitrarily shaped acoustic cavity. The verification demonstrated that lower-order eigenvalues can be successfully extracted regardless of the number of nodes. In future studies, this method will be applied to acoustic cavities with more diverse shapes and boundary conditions.

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      UCI(KEPA) : I410-151-25-02-090986047