10.14489/td.2023.02.pp.034-040

2023, 02 February

DOI: 10.14489/td.2023.02.pp.034-040

Kugushev V. I.
CONDUCTIVITY OF ENERGY OF NATURAL OSCILLATIONS OF T-JOINT OF TWO BEAMS DURING NON-DESTRUCTIVE FAST TESTING OF STRUCTURES
(pp. 34-40)

Abstract. The Article studies conditions for the onset of resonance oscillations of a T-joint of two beams. Natural oscillations were excited in beams, and the problem was to synchronize their dynamic parameters in the joint. To solve the problem, a model of natural oscillations free energy carrier, presented in a geometric form, was used. A brief description of this model is given. As a result, a diagram was made linking relative lateral strain, arising from bending oscillations, to geometrics of the T-joint. It was demonstrated that the diagram determines the level of conductivity of natural oscillations energy through a joint, and that the magnitude of this level determines efficiency of non-destructive fast testing of a structure with the use of excitation of natural oscillations. To this end, as an example, the Article offers results of experimental studies of special dismountable structures having a defective element in them.

Keywords: T-joint, natural oscillations, model, dynamic parameters, fast testing.

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V. I. Kugushev (JSC “CDB ME “Rubin”, Saint-Petersburg, Russia) E-mail: Данный адрес e-mail защищен от спам-ботов, Вам необходимо включить Javascript для его просмотра.

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