INFLUENCE OF THE FIXATION STIFFNESS ON THE VIBRATIONS OF SHORT SINGLE-BINDING BEAMS

SHIMANOVSKY Alexander O., D. Sc. in Eng., Prof., Head of the Department “Technical Physics and Theoretical Mechanics”, Belarusian State Transport University, Gomel, Republic of Belarus, This email address is being protected from spambots. You need JavaScript enabled to view it.">This email address is being protected from spambots. You need JavaScript enabled to view it.

BOCKO Jozef S., Ph. D. in Eng., Prof., Head of Institute of Structural and Processing Engineering — Head of Department of Applied Mechanics and Mechanical Engineering, Technical University of Košice, Košice, Slovakia

The influence of the fixation stiffness on the vibrations eigenfrequencies of short single-binding beams is analyzed. The Timoshenko’s equation is used to describe the beam motion. It is shown that boundary condition applied to the end of beam can lead to 4 times more values of the beam eigenfrequencies in comparison with the experimental or computational results obtained considering the deformation of the fixation place. The recommendations on the creation of finite element models for structural vibrations analysis are given.

free vibrations, boundary conditions, Timoshenko's equation, eigenfrequencies, fixation stiffness

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