Transient processes in a gas/plate structure in the case of light loadingстатья
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Дата последнего поиска статьи во внешних источниках: 3 ноября 2021 г.
Аннотация:The problem of a pulse excitation in an acoustichalf-space with a flexible wall described by a thinplate equation is studied. The solution is writtenas a double Fourier integral. A novel technique ofestimation of this integral is developed. The surfaceof integration is deformed in such a way that theintegrand is exponentially small everywhere exceptthe neighbourhoods of several ‘special points’ thatprovide field components. Special attention is paidto the pulse associated with the coincidence point ofthe branches of the dispersion diagram of the acoustic medium and the plate. This pulse is shown to be a harmonic wave of a finite duration.