Sound transmission loss of periodic Mindlin plates with non-uniformly spaced mass attachments
Andrew J Hall,
Vladislav Sorokin,
Mehrdad Aghamohammadi
et al.
Abstract:The sound transmission loss (STL) of wall partitions, especially in the coincidence region, is investigated. A Mindlin plate with periodically attached masses in a periodic “supercell” pattern is analyzed theoretically and experimentally for sound attenuation. Modeling the masses as points, analytical expressions for predicting the dispersion relation and frequency bandgaps of the plate are developed. The results show that varying the distances between the masses or the masses themselves can lead to the emerge… Show more
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