10.14489/td.2014.07.pp.064-072

2014, 07 July

DOI: 10.14489/td.2014.07.pp.064-072

Safina G.F.
ACOUSTIC DIAGNOSING OF CHARACTERISTICS THE SHOVELS OF THE TURBINE TIED BY THE BANDAGE
(pp. 64-72)

Abstract. The direct spectral task of determination of frequencies of free fluctuations of shovels of the turbine tied by a bandage is considered. According to the solution of a direct task influence of mass and zhestkostny parameters of shovels and a bandage on frequencies of free fluc-tuations of system is investigated and shown that the increase in zhestkost conducts to increase in frequencies of fluctuations, and increase in masses − to reduction of frequencies. For the first time the return task − a problem of diagnosing of characteristics of shovels of known frequencies of their fluctuations is set and solved. Uniqueness of the solution of the return task is investigated, the corresponding theorems are proved. Algorithms of determination of weight and rigidity of a shovel are received with known two and three frequencies of fluctuations of mechanical system.

Keywords: own frequencies, free fluctuations, turbine shovels with a bandage, the frequency equation, diagnosing, preservation of frequencies of fluctuations.

+ - About the Authors Click to collapse

G. F. Safina
Neftekamsk Branch of the Bashkir State University, Neftekamsk, Russia. E-mail: Данный адрес e-mail защищен от спам-ботов, Вам необходимо включить Javascript для его просмотра.

+ - References Click to collapse

1. Birger I. A. (1978). Technical diagnostics. Moscow: Mashinostroenie.
2. Artobolevskii I. I., Bolitskii Iu. I., Genkin M. D. (1979). Introduction to technical diagnostics of machines. Moscow: Mashinostroenie.
3. Pavlov B. V. (1971). Acoustic diagnostics of mech-anisms. Moscow: Mashinostroenie.
4. Lavendel E. E. (1981). Vibrations in engineering. (Vol. 4). Moscow: Mashinostroenie.
5. Genkin M. D., Sokolova A. G. (1987). Vibroacoustic diagnostics of machines and mechanisms. Moscow: Mashinostroenie.
6. Blekhman I. I. (1979). Vibrations in engineering. (Vol. 2). Moscow: Mashinostroenie.
7. Artobolevskii I. I. (1978). Vibrations in engineer-ing. Vibrations of linear systems. (Vol. 1). Moscow: Mashinostroenie.
8. Panovko Ia. G. (1976). Fundamentals of applied theory of vibrations and shock. Moscow: Mashinostroenie.
9. Timoshenko S. P. (1959). Oscillations in engineer-ing. Moscow: Fizmatgiz.
10. Babakov I. M. (1968). Theory of oscillations. Moscow: Fizmatgiz.
11. Akhatov I. Sh., Akhtiamov A. M. (2001). Determing the type of fastening rod on its own frequencies of flexural vibrations. Prikladnaia matematika i mekhanika, (2), pp. 290-298.
12. Akhtiamov A. M. (2003). Diagnosis of fastening ring plate on the natural frequencies of its oscillations. Izvestiia RAN, MTT, (6), pp. 137-147.
13. Safina G. F. (2005). Diagnosis of the relative rigidity of reinforced cylindrical shells on eigenfrequencies of their asymmetric oscillations. Kontrol'. Diagnostika, (12), pp. 55-59.
14. Akhtiamov A. M., Safina G. F. (2008). Determina-tion of vibration protection fastening of pipelines. Prikladnaia mekhanika i tekhnicheskaia fizika, 49(1), pp. 139-147.
15. Safina G. F. (2010). Study of direct and inverse problems of transverse oscillations of the shaft on sup-ports. Defektoskopiia, (4), pp. 83-96.
16. Safina G. F. (2011). Investigations of the torsional vibrations of a shaft with disks. Russian Journal of Nondestructive Testing, 47(3), pp. 189-201. doi: 10.1134/S1061830911030089
17. Safina G. F. (2012). The preservation of oscillation frequencies of a pipe with a liquid. Sibirskii zhurnal industrial'noi matematiki, 15(3), pp. 124-134.
18. Safina G. F. (2013). Diagnosis of mass specs of power installation. Defektoskopiia, (6), pp. 77-89.
19. Levin A. V. (1981). Strength and vibration of blades and disks of steam turbines. Moscow: Nauka.
20. Smolenskii A. N. (1964). Construction and calcula-tion of steam turbines. Moscow: Mashinostroenie.
21. Veller V. N. (1985). Regulation and protection of steam turbines. Moscow: Energoatomizdat.
22. Strelkov S. P. (1964). Introduction to the theory of oscillations. Moscow: Mashinostroenie.
23. Frolov K. V. (Ed.), Popov S. A., Musatov A. K. et al. (1987). Theory of mechanisms and machines: textbook for universities. Moscow: Vysshaia shkola.
24. Levin B. Ia. (1956). The distribution of roots of en-tire functions. Moscow: Gostekhizdat.

+ - Purchase digital version of a single article Click to collapse

This article is available in electronic format (PDF).

DOI: 10.14489/td.2014.07.pp.064-072

Copy the article DOI and follow the link https://id-spektr.ru/product/pokupka-elektronnoy-stati-iz-zhurnala-kontrol-diagnostika

Please specify the article DOI in the order comments.