ESTIMATION OF THE DISTRIBUTION OF FLEXURAL STRESSES AND DEFECTS INSIDE SYMMETRICAL CROSS-SECTIONS OF A STEEL BEAM

Receipt date: 
04.04.2019
Bibliographic description of the article: 

Stepanov M. A., Stepanov A. P. Otsenka raspredeleniya izgibnykh napryazhenii i defektov vnutri simmetrichnykh poperechnykh sechenii stal'noi balki [Estimation of the distribution of flexural stresses and defects inside symmetrical cross-sections of a steel beam]. Sovremennye tekhnologii. Sistemnyi analiz. Modelirovanie [Modern Technologies. System Analysis. Modeling], 2019. Vol. 63, No. 3, pp. 22–31. DOI: 10.26731/1813-9108.2019.3(63).22–31

Year: 
2019
Journal number: 
УДК: 
620.179
DOI: 

10.26731/1813-9108.2019.3(63).22–31

Article File: 
Pages: 
22
31
Abstract: 

The article analyzes ways of the detection and distribution of bending stresses and defects in the material of symmetrical cross-sections of extended steel profiles using magnetic field patterns, previously created as symmetrical with respect to the geometric shapes of their cross-sections. When analyzing the patterns of an external magnetic field on the surface of a controlled cross-section in the extended profile control section, it might be necessary to evaluate the internal stresses and defects in the section, as well as to figure out how the magnetic induction distribution is related to the indicated stresses and defects, and how the stresses are distributed in the sections in the control section. We used methods of magnetic control of extended ferromagnetic objects, having in their cross-section a simple geometrical figure symmetrical about one or more axes of symmetry, as well as the mathematical tools of subject matters on the resistance of materials and theoretical electrical engineering. The calculations obtained in the work were verified using digital models and confirmed by full-scale experiments. The use in practice of the considered methods of non-destructive magnetic control and the evaluation of the technical state of extended ferromagnetic profiles with symmetrical cross-sections, without taking them out of working condition, allows us to speed up the control process, making it intuitive and easy to implement.

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