THE INFLUENCE OF SHEAR ENERGY AND ROTARY INERTIA TO BEAM ELEMENTS OSCILLATION

Bosacov S.V., the Belarusian National Technical University, Minsk, the Republik of Belarus

Shchetsko М.S., Republican Unitary Scientific-Research Enterprise for Construction “Institute BelNIIS”, Minsk, the Republik of Belarus

The influence of correction for shear and rotary inertia in the case of free oscillating physically-nonlinear beams is analysed in the paper. The solution obtained via energetic methods with the usage of "moment-curvature" diagram. Various types of materials and transversal shapes are studied. The influence of nonlinearity to the natural frequency is shown and analysed. Obtained solutions can be used in the calculations of building structures.

shear and rotary inertia, free oscillating physically-nonlinear beams, "moment-curvature" diagram

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