Nonlinear vibrations in plates and gongs | Zendy

Thomas D. Rossing | Zendy; N. H. Fletcher | Zendy

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Nonlinear vibrations in plates and gongs

Author(s) -

Thomas D. Rossing,

N. H. Fletcher

Publication year - 1981

Publication title -

the journal of the acoustical society of america

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.619

H-Index - 187

eISSN - 1520-8524

pISSN - 0001-4966

DOI - 10.1121/1.2018775

Subject(s) - nonlinear system , softening , vibration , tension (geology) , hardening (computing) , compression (physics) , acoustics , structural engineering , materials science , physics , engineering , composite material , layer (electronics) , quantum mechanics

The sounds from certain types of gongs show a frequency shift, up or down, as the vibration decays. In order to understand this nonlinear behavior, we have studied the vibrations of a variety of fiat and curved plates under v?trying amounts of radial tension or compression. Flat plates show a nonlinearity of a hardening type {falling frequency), whereas most curved plates show softening behavior (rising frequency). The degree of the nonlinearity appears to be sufficient to explain the observed frequency shift in the gongs studied.

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