Free and forced oscillations of Timoshenko beam made of viscoelastic material

• Autorzy: Manevich A. , Kołakowski Z.

Warianty tytułu

PL

Drgania własne i wymuszone belki Timoshenko wykonanej z materiałulepko-sprężystego

• Języki publikacji: EN

Abstrakty

EN

Dynamics of Timoshenko's beam made of a viscoelastic material is studied. Dimensionless equations of motion are obtained, depending only on two parameters, one of which relates to the shear flexibility and the second – to the viscous internal friction. Advantages of the proposed equations are illustrated by solutions to the free and forced oscillation problems for the simplest case of hinged-hinged beams. The influence of the beam shear flexibility and viscous internal friction on the natural frequencies and the dynamic amplification factor is studied.

PL

W pracy analizowano dynamikę belki Timoshenko wykonanej z materiału lepkosprężystego.Wyprowadzono bezwymiarowe równania ruchu zależne jedynie od dwóch parametrów: sztywności ścinania i współczynnika lepkiego tarcia wewnętrznego. Korzyści zaproponowanych równań przedstawiono na przypadkach drgań swobodnych i wymuszonych belki przegubowo podpartej na obu końcach. Analizowano wpływ sztywności ścinania belki i współczynnika lepkiego tarcia wewnętrznego na częstości drgań i dynamiczny współczynnik wzmocnienia.

Słowa kluczowe

EN

Timoshenko beam; viscoelasticity; oscilation; internal friction

• Wydawca: Polskie Towarzystwo Mechaniki Teoretycznej i Stosowanej
• Czasopismo: Journal of Theoretical and Applied Mechanics
• Rocznik: 2011
• Tom: Vol. 49 nr 1
• Strony: 3--16
• Opis fizyczny: Bibliogr. 19 poz., rys.

Twórcy

autor

Manevich A.

autor

Kołakowski Z.

• Dniepropetrovsk National University, Department of Computational Mechanics and Strength of Materials, Ukraine,

Bibliografia

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