Dependence «amplitude-frequency» of non-linear flutter type oscillations of plates in pre-critical stage
Journal Title: Հայաստանի գիտությունների ազգային ակադեմիայի տեղեկագիր․ Մեխանիկա - Year 2015, Vol 68, Issue 4
Abstract
The problem of nonlinear oscillations of an isotropic rectangular plate in a supersonic gas flow is examined. The study was conducted taking into account both types of nonlinearities: wind (quadratic and cubic) and geometric (cubic). It is known that nonlinear dependence of the frequency on the amplitude of the oscillations А of the plate in absence of flowing stream has a hard character, i.e. with increasing amplitude the frequency increases. In this paper it is established that the presence of flowing stream may cause both quantitative and qualitative changes of the character of noted monotonically increasing dependence.
Authors and Affiliations
Gevorg Baghdasaryan, Marine Mikilyan, Rafayel Saghoyan
Keywords
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