Investigation of critical frequencies of the centrifugal compressor rotor with taking into account stiffness of bearings and seals

Journal Title: Журнал інженерних наук - Year 2017, Vol 4, Issue 1

Abstract

In this paper the implementation of the mathematical model for rotor free oscillations of centrifugal machines is considered with the use of the computer program “Critical frequencies of the rotor”. The advantage of the program is the possibility of taking into account any advance given analytic dependence of support and seal stiffness on the rotor speed. As a result of numerical calculation on the example of the multistage centrifugal compressor 295GTS2-190/44-100M eigenfrequencies, critical frequencies and corresponding mode shapes are defined. The credibility of the proposed mathematical model is confirmed by theorem of the mutual position for spectrum of eigenfrequencies and correspondent critical frequencies, as well as by comparing the results of dynamic calculation in the program “Critical frequencies of the rotor” with the results of numerical simulation in ANSYS using the 3D finite element model and drawing the Campbell diagram.

Authors and Affiliations

I. Pavlenko, V. Simonovskiy, J. Pitel', A. Verbovyi, M. Demianenko

Keywords

Related Articles

Development of the method for estimating the inertia radius relative to the vertical axis of the car

The method of estimating the inertia radius relative to the vertical axis of the car is proposed. This allows a third to reduce the relative error of its definition. A refined formula for calculating the radius of inerti...

Analysis of the application of the galvanic circuits in schemes of the catodic protection for underground papelines

The possibility of using anode earthing in an assembly with a container is considered. Ensuring the integrity of the pipeline is a topical issue in connection with the environmental and economic consequences. The process...

Features of Geochemical Migration of Chemical Elements after Technogenic Loading of Pyrogenic Nature

The study of the concentration of trace metals in soils by atomic absorption analysis was carried out. The results indicate the transformation of their migration properties. The diversity and versatility of behavior of c...

The decrease in technogenic load on the environment during the process of absorption of ammonia in soda industry

The article studies the effectiveness of implementation of existing equipment of soda production absorbers for ammonia cleaning from gas emissions. It identifies the major sources of ammonia emissions in the soda ash pro...

Influence effect of electric action on the micro structure of steel in crystallization

The dependence of physical and mechanical properties of manganese steel grade 110H13L on the effect of electrical activity during crystallization of the casting is considered. Treatment of the melt by electric current in...

Download PDF file
  • EP ID EP240039
  • DOI -
  • Views 118
  • Downloads 0

How To Cite

I. Pavlenko, V. Simonovskiy, J. Pitel', A. Verbovyi, M. Demianenko (2017). Investigation of critical frequencies of the centrifugal compressor rotor with taking into account stiffness of bearings and seals. Журнал інженерних наук, 4(1), 1-6. https://europub.co.uk/articles/-A-240039