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2 Technical Sciences / University of Warmia and Mazury in Olsztyn

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Dynamics of electromechanical drive of suspended timbertransporting rope system

Dzyuba L., Baryliak V.

Technical Sciences / University of Warmia and Mazury in Olsztyn

2016

nr 19(3)

245--256

Dynamic loads of drive of suspended timbertransporting rope system with an electric motor are investigated. Developed a dynamic model of the electromechanical drive considering the changing of the electric motor’s moment during start-up and the resistance force moment. The changing of the resistance force moment is expressed through the changes in tension force of the pull-bearing rope systems in various manufacturing operations. In determining the moment of inertia of the drive drum is accounted multi-winding of rope. Research on dynamic load of system elements are made with the taking into account the influence of torsional stiffness of system parts and lifting capacity of the suspended timbertransporting rope system.

Resonant vibrations of the moving band saw blade with variable tension

Dzyuba L., Khytriak O., Menshykova O., Rebeznyuk I.

Technical Sciences / University of Warmia and Mazury in Olsztyn

2015

nr 18(1)

49--59

Resonant transverse bending vibrations of the band saw blade have been investigated taking into consideration variable in the time tension force of the blade and the external periodic perturbation. Amplitude of resonant vibrations of the band saw blade piece has been determined by the Bubnov-Galerkin method and basing on the idea of perturbation theory.