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Orif Zh. Murodov
Kostroma State University
Pavel N. Rudovsky
Kostroma State University
Andrey R. Korabelnikov
Kostroma State University
DETERMINATION OF NATURAL FREQUENCIES AND FORMS OF FREE VIBRATIONS OF THE GRATE OF THE RAW COTTON CLEANER
Murodov O. Zh. , Rudovsky P. N., Korabelnikov A. R. Determination of natural frequencies and forms of free vibrations of the grate of the raw cotton cleaner. Technologies & Quality. 2022. No 1(55). P. 24–28. (In Russ.) https: doi 10.34216/2587-6147-2022-1-55-24-28.
DOI: 10.34216/2587-6147-2022-1-55-24-28
УДК: 677.21.051
Publish date: 2022-02-22
Annotation: The article discusses the operation of the grate proposed by the authors with grates made of composite material, with a polyamide matrix and a filler of basalt fibre. Experimental grates are mounted on elastic rubber supports with non-linear rigidity. On the basis of finite element modelling, the analysis of the forms and natural frequencies of free oscillations of the grate of cotton cleaner from large litter was carried out. It is shown that the first 12 natural frequencies are located in a narrow range from 2.579 to 2.692 Hz. This is due to the design features of the grate. It is shown that during operation the grate performs forced oscillations with frequencies 45…75 Hz.
Keywords: cotton cleaner, grate, elastic support, non-linear stiffness, natural frequencies, vibration modes, finite element
Literature list: 1. Gazieva S. A., Kurbonov B. D., Nurov M. E., Ibrogimov H. I., Rudovsky P. N. Change of structural in-dex of raw-cotton by technological transitions of its processing. Izvestiya Vysshikh Uchebnykh Zavedenii. Seriya Teknologiya Tekstil'noi Promyshlennosti [Textile Industry Technology (Series Proceedings of Higher Educational Institutions)]. 2013;5(347):131–134. (in Russ.) 2. Murodov O. J., Tashpulatov D. S, Juraev A., Gafurov J. K., Vassiliadis S. Design development and parameters calculation methods of plastic diamond pattern bars on resilient supports in ginning machines. Aegean Interna-tional Textile and Advanced Engineering Conference (AITAE 2018) IOP Conf. Series: Materials Science and Engineering. URL: https://www.researchgate.net/publication/329485218_Design_development_and_parameters_calculation_methods_of_plastic_diamond_pattern_bars_on_resilient_supports_in_ginning_machines (accessed 28.01.2022). 3. Murodov O. J. Perfection of Designs and Rationale of Parameters of Plastic pattern Cleaning Cleaners. In-ternational Journal of Innovative Technology and Exploring Engineering (IJITEE). 2019;8,12:2640–2646. 4. Murodov O. J. Development of an effective design and justification of the parameters of the separation and cleaning section of raw cotton. ICMSIT-II 2021 Journal of Physics: Conference Series. 2021;1889,4:1889–1896. 5. Agzamov M. M., Yunusov S. Z., Gafurov J. K. On the technological development of cotton primary processing, using a new drying-purifying unit. IOP Conf. Series: Materials Science and Engineering. 2017. URL: https://www.researchgate.net/publication/320940228_On_the_technological_development_of_ cotton_primary_processing_using_a_new_drying-purifying_unit (accessed 28.01.2022). 6. Korabelnikov A. R., Lebedev D. A., Shutova A. G. Selection of trash from the surface of fibrous material layer. Izvestiya Vysshikh Uchebnykh Zavedenii. Seriya Teknologiya Tekstil'noi Promyshlennosti [Textile In-dustry Technology (Series Proceedings of Higher Educational Institutions)]. 2012;4(340):143–146. (in Russ.)
Author's info: Orif Zh. Murodov, Kostroma State University, Kostroma, Russia E-mail: baxrinjom@mail.ru, https://orcid.org/0000-0002-7016-8680
Co-author's info: Pavel N. Rudovsky, Kostroma State University, Kostroma, Russia E-mail: pavel_rudovsky@mail.ru, https://orcid.org/0000-0002-8675-2910
Co-author's info: Andrey R. Korabelnikov, Kostroma State University, Kostroma, Russia E-mail: prostokar@mail.ru, https://orcid.org/0000-0002-4546-7515