The Influence of Supersonic Stream on the Dependence “Amplitude-Frequency” of Nonlinear Vibrations of Flexible Plate
Journal Title: Հայաստանի գիտությունների ազգային ակադեմիայի տեղեկագիր․ Մեխանիկա - Year 2013, Vol 66, Issue 3
Abstract
The problem of nonlinear vibrations of orthotropic rectangular plate in asupersonic gas flow is considered. Investigations were done taking into account both types of nonlinearity: the wind (quadratic and cubic) and geometric (cubic). It is known [1] that dependence of the frequency of non- linear oscillations of the plate θ on the amplitude А in the absence of flowing streamhas a hard character, i.e. with the increases amplitude the vibration frequencies increase. In this paper it is established that the presence of flowing stream can be a source of both quantitative and qualitative changes in the character of this monotonically increasing dependence. The main results which are the consequence impact of the flowing stream of gas on the dependence “amplitude-frequency” of nonlinear vibrations of the aeroelasticsystem under consideration are as follows:
Authors and Affiliations
Gevorg Baghdasaryan, Marine Mikilyan, Rafayel Saghoyan, Pier Marzocca
Keywords
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