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Tuning Fork Modal Analysis and Sound Pressure Calculation Using FEM and BEM  

Jarng, Soon-Suck (Dept. of Information Control & Instrumentation, Chosun University)
Lee, Je-Hyung (Dept. of Information Control & Instrumentation, Chosun University)
Publication Information
The Journal of the Acoustical Society of Korea / v.21, no.3E, 2002 , pp. 112-118 More about this Journal
Abstract
An unconstrained tuning fork with a 3-D model has been numerically analyzed by Finite Element Method (FEM) and Boundary Element Method (BEM). The first three natural frequencies were calculated by the FEM modal analysis. Then the trend of the change of the modal frequencies was examined with the variation of the tuning fork length and width. An formula for the natural frequencies-tuning fork length relationship were derived from the numerical analysis results. Finally the BEM was used for the sound pressure field calculation from the structural displacement data.
Keywords
Tuning fork; FEM; BEM; Modal analysis; Sound pressure field;
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