Vibration of microperforated plate with spatial distribution of multiple-sized perforations
Lucie Gallerand,
Mathias Legrand,
Thomas Dupont
et al.
Abstract:Recent works by the authors on homogeneous MPPs have highlighted the structural damping capabilities of MPPs in the low frequency range. The developed theoretical approach was based on the analogy between an MPP and a porous plate. The added damping is due to visco-thermic effects coupled
to fluid-structure interactions. The added damping maxes out at a characteristic frequency depending on perforation diameter. In order to reduce plate vibrations, it was advised to match the characteristic frequency to a pla… Show more
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