Kucha G.V., Mosaleva I.I.
FLUCTUATIONS OF THE THIN-WALLED CORE IN VIEW OF COMPLICATING FACTORS ^{[№ 9 ' 2012]}
The account of deformations of shift, effect of the Karman and stretching of an average line of section at research of fluctuations of a thin-walled core will allow to detect additional frequency and essential distinctions in the frequencies which are not considering complicating factors. The mathematical model, allowing to define frequency of own fluctuations of thin-walled cores of the closed structure is offered at various values of dimensionless parameters.

Gavrilov A.A., Kudina, L.I., Kucha G.V., Morozov N.A.
THE INFLUENCE OF SECTION GEOMETRIC CHARACTERISTICS ON THE FREQUENCIES OF FREE FLEXURAL VIBRATIONS OF THIN STRAIGHT BARS ^{[№ 5 ' 2011]}
We studied the frequency and the main forms of free flexural vibrations of thin rods based on the theory that takes into account secondary shifts and rotational inertia of the sections. We used the boundary element method and determined the influence of the bar section characteristics as relative values on the frequencies of free oscillations. The comparison of calculation results with existing theories is provided.