Acoustic and Vibroacoustic Modeling in LSDYNA Based on Variational BEM
The paper concerns the vibroacoustic simulation based on the acoustic Variational Indirect Boundary Element Method (VIBEM) recently implemented in LSDYNA. In this formulation, which assumes a weak acoustic-structure interaction, the transient structural response is computed first. By applying the FFT, it is transformed into a frequency response. The obtained results are taken as boundary conditions for the acoustic BEM. Consequently, the radiated noise at any point into space can be calculated. The efficiency of the present method is checked for both pure acoustic and vibroacoustic problems. The obtained results are in agreement with the analytical solutions.
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Acoustic and Vibroacoustic Modeling in LSDYNA Based on Variational BEM
The paper concerns the vibroacoustic simulation based on the acoustic Variational Indirect Boundary Element Method (VIBEM) recently implemented in LSDYNA. In this formulation, which assumes a weak acoustic-structure interaction, the transient structural response is computed first. By applying the FFT, it is transformed into a frequency response. The obtained results are taken as boundary conditions for the acoustic BEM. Consequently, the radiated noise at any point into space can be calculated. The efficiency of the present method is checked for both pure acoustic and vibroacoustic problems. The obtained results are in agreement with the analytical solutions.
Souli.pdf
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