Crack modeling of metal rod eigen-frequencies
https://doi.org/10.31675/1607-1859-2021-23-2-56-64
Abstract
The paper presents the development of approaches to the crack detection in metal rod structures based on the analysis of the lowest eigen-frequency modes. Full-scale experiments and numerical calculations are carried out, and the obtained results are compared. A vibration analyzer is used for full-scale experiments, and numerical calculations are performed by using Autodesk Inventor. With regard to the internal friction, the antinodes of various vibration forms were identified using a specially developed program. The model includes sensors for the the field experiment as masses affecting the frequency-response characteristics. The dependences are obtained for eigen-frequencies in the presence of cracks and for the crack locations. The polynomial dependences of the crack location on the lowest eigen-frequency modes of the rod can be used to analyze the crack position of in cantilever beams.
About the Authors
A. A. Gavrilov
Orenburg State University
Russian Federation
Russian Federation
Aleksandr A. Gavrilov, PhD
Orenburg, Pobedy Ave, 13
G. I. Grebenyuk
Tomsk State University of Architecture and Building
Russian Federation
Russian Federation
Grigorii I. Grebenyuk, DSc, Professor
Tomsk, Solyanaya Sq., 2
V. I. Maksak
Tomsk State University of Architecture and Building
Russian Federation
Russian Federation
Vladislav I. Maksak, DSc, Professor
Tomsk, Solyanaya Sq., 2
N. A. Morozov
Orenburg State University
Russian Federation
Russian Federation
Nikolai A. Morozov, PhD, A/Professor
Orenburg, Pobedy Ave, 13
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Review
For citations:
Gavrilov A.A., Grebenyuk G.I., Maksak V.I., Morozov N.A. Crack modeling of metal rod eigen-frequencies. Vestnik Tomskogo gosudarstvennogo arkhitekturno-stroitel'nogo universiteta. JOURNAL of Construction and Architecture. 2021;23(2):56-64. (In Russ.) https://doi.org/10.31675/1607-1859-2021-23-2-56-64
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