10.14489/td.2022.12.pp.020-025

2022, 12 December

DOI: 10.14489/td.2022.12.pp.020-025

Trebunskih P. A.
CONSTRUCTION OF A MATHEMATICAL MODEL OF A DEFECT IN THE APPEARANCE OF AN INTERNAL CRACK IN A TURBINE OR PUMP BLADE
(pp. 20-25)

Abstract. The appearance of a crack in the turbine or pump blade with the subsequent occurrence of vibration is considered. Dependences for determining the presence of a defect and the level of vibration are obtained, and phase portraits of vibrations based on the obtained dependences are constructed. The result of the study is the possibility of simulating the defect on relatively simple mathematical models.

Keywords: vibration, defect, mathematical model, turbine blade, phase coordinates, vibration acceleration, Runge–Kutta method.

+ - About the Authors Click to collapse

P. A. Trebunskih (Russian State University of Oil and Gas named after I. M. Gubkin, Moscow, Russia) E-mail: Данный адрес e-mail защищен от спам-ботов, Вам необходимо включить Javascript для его просмотра.

+ - References Click to collapse

1. Berns V. A., Zhukov E. P., Malenkova V. V., Lysenko E. A. (2018). Diagnostics of cracks in metal panels by non-linear distortions of oscillation portraits. Obrabotka metallov (tekhnologiya, oborudovanie, instrumenty), Vol. 20, (2), pp. 6 – 17. [in Russian language] DOI: 10.17212/1994-6309-2018-20.2-6-17

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