Prediction of low-frequency structure-borne sound in concrete structures using the finite-difference time-domain method

T. Asakura, T. Ishizuka, T. Miyajima, M. Toyoda, S. Sakamoto

Research output: Contribution to journalArticlepeer-review

11 Citations (Scopus)

Abstract

Due to limitations of computers, prediction of structure-borne sound remains difficult for large-scale problems. Herein a prediction method for low-frequency structure-borne sound transmissions on concrete structures using the finite-difference time-domain scheme is proposed. The target structure is modeled as a composition of multiple plate elements to reduce the dimensions of the simulated vibration field from three-dimensional discretization by solid elements to two-dimensional discretization. This scheme reduces both the calculation time and the amount of required memory. To validate the proposed method, the vibration characteristics using the numerical results of the proposed scheme are compared to those measured for a two-level concrete structure. Comparison of the measured and simulated results suggests that the proposed method can be used to simulate real-scale structures.

Original languageEnglish
Pages (from-to)1085-1100
Number of pages16
JournalJournal of the Acoustical Society of America
Volume136
Issue number3
DOIs
Publication statusPublished - 1 Sep 2014

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