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1
Content available Natural frequencies of layered elongated cylindrical panels for geometrically nonlinear deformation at discrete consideration of components
Marchuk M., Goriachko T., Pakosh V.
Vibrations in Physical Systems
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2016
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Vol. 27
255--264
EN
The proposed and verified the technique of finding a finite number of first natural frequencies for geometrically nonlinear vibrations of layered elongated cylindrical panels at discrete consideration of components. The influence of the radius of curvature on the natural frequencies of three- and five-layered panels is investigated. The dependence between the volume of filler three-layer panels and the lowest natural frequency has been established.
2
Content available Geometrically nonlinear free transversal vibrations of thin-walled elongated panels with arbitrary generatrix
Marchuk M., Goriachko T., Pakosh V.
Vibrations in Physical Systems
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2014
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Vol. 26
153--160
EN
The algorithm for finding a finite number of the first values of natural frequencies and forms of geometrically nonlinear free transverse vibrations of thin-walled elongated panels with arbitrary generatrix is proposed and verified. Under normal coordinate quadratic the approximation of displacements is used. Along the tangential coordinates used one-dimensional finite elements. The discrete variation problem is built. For its solving the perturbation method is applied. The numerical results are compared with previously obtained by other authors.
3
Content available remote Free vibrations of layer composite plates pliable to transversal shear and compression
Lesyk O., Marchuk M., Pakosh V.
Vibrations in Physical Systems
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2012
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Vol. 25
253--260
EN
A mathematical model of the process of linear free vibrations of layer plates with components pliable to transversal shear and compression is proposed. The analytical expression for the spectrum of natural frequencies of two-layer plate-strip is obtained. The influence of parameters of pliability to transversal shear and compression on their values is investigated.
4
Content available remote The definition of dissipative composite characteristics on the basis of nonlinear damping effects
Marchuk M., Salyak B., Pakosh V., Yakimov F.
Vibrations in Physical Systems
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2006
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Vol. 22
257--264
EN
The work is devoted to the experimental investigations of dissipative properties and damage of composite materials. The experimental technique is based on the measurement of the phase, amplitude and frequency characteristics of prismatic specimens subjected to dynamic excitation. The theoretical foundations of the method and the experimental results related with nonlinear damping effects are discussed. The presented experimental data certain conclusions about delamination damage of composite material can be drawn.
5
Content available remote Influence of pliability to transversal deformations of shear and compression on correlation frequency from amplitude for nonlinear oscillations of composite plates
Marchuk M., Pakosh V., Lesyk O., Hurayewska I.
Vibrations in Physical Systems
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2006
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Vol. 22
251--256
EN
A system of differential equations describing the non-linear transverse vibrations of composite plates – pliable to transversal shear and compression strains – is presented. The analytical expressions for amplitude-frequency characteristics of such vibrations are given. The parametric analysis of dependence of a basic frequency of transverse vibrations of a strip-plate versus the amplitude at the hinge fixed and rigid fastened of the edges is made. The skeletal curves for non-linear vibrations of composite plates are constructed.
6
Content available remote Nonlinear oscillations pliable to shear transversal deformations and compression of composite plates
Marchuk M., Pakosh V., Maksymuk O.
Vibrations in Physical Systems
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2002
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Vol. 20
222--222
7
Content available remote Dissipative properties and damage of composite materials: structural-sensitive methods
Marchuk M., Salyak B., Pakosh V., Yakimov F.
Vibrations in Physical Systems
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2002
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Vol. 20
223--223
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