MODELING OF THE MACHINE FOR THE BALANCING OF THE ROTOR IN THE ANSYS SOFTWARE COMPLEX

 An imbalance appears during the manufacture, operation and maintenance of power equipment. The rotor imbalance arises due to the unbalanced masses of the rotor which leads to the emergence of variable loads on the supports and bending of the rotor. The dynamic balancing of the rotor on the balancing machine is the way to avoid the negative effects of centrifugal forces. The balancing machines in resonant and soft-bearing modes are usually used on modern production. However, these methods of balancing has a number of shortcoming, which can be solved by using the hard-bearing method. For example, an ability of balancing of products with huge imbalance and increasing the accuracy of balancing. 

Application of soft-bearing balancing method needs to be added in other ways, taking into account high reqiuirments of the power equipment. A model of a hard-bearing balancing machine was designed for balancing rotors and rotating elements of power equipment. The Autodesk Inventor CAD software was used for modeling of the balancing machine and the rotor. 

The modal analysis was conducted by using the block method of Lanczos on the basis of the ANSYS system. The main assumption during the modal analysis process was that the form of free fluctuations is calculated in relative units and does not allow to determine absolute shifts. The natural oscillation frequencies of the 3D models of the balancing machine bed and the rotor of the gas turbine engine 16M were calculated to determine the informative frequency range that the rotor should be hard-bearing balanced. 

1. Tazeev I.R. Osobennosti postroeniya 3D-modeli balansirovochnogo oborudovaniya // Materialy XII mezhdunarodnoy molodezhnoy nauchnoy konferentsii po estestvenno – nauchnym i tekhnicheskim distsiplinam. Yoshkar-Ola: Povolzhskiy gosudarstvennyy tekhnologicheskiy universitet, 2017. Ch. 2. P. 192.

2. Gaponenko S.O., Kondratiev A.E. Device for Calibration of Piezoelectric Sensors // Procedia Engineering. Vol. 206. 2017. P. 146‒150.

3. Osnovy izmereniya vibratsii. Rezhim dostupa: http://www.vibration.ru/osn_vibracii.shtml. Data obrascheniya 15.12.2017.

4. Gaponenko S.O., Kondrat'ev A.E., Kostyleva E.E., Zagretdinov A.R. Ustanovka dlya kalibrovki p'ezoelektricheskikh datchikov. Izvestiya vysshikh uchebnykh zavedeniy. Problemy energetiki. 2016. No. 7‒8. P.79‒86.

5. Pashkov E.N. Opredelenie vremeni avtomaticheskoy balansirovki rotora pri ustanovivsheysya skorosti // Gornyy informatsionno-analiticheskiy byulleten' (nauchno-tekhnicheskiy zhurnal). Moskva, 2013. No. 4 (1). P. 476‒482.

6. Matematicheskoe obosnovanie sposoba opredeleniya staticheskoy neuravnoveshennosti rotorov // Vіsnik natsіonal'nogo tekhnіchnogo unіversitetu «KHPІ». Khar'kov, 2014. Iss.. 31. P. 99‒104.

7. Qin R. et al. Study on the Frequency Compensation of the Dynamic Unbalance Signal Extraction for General Hard Bearing Dynamic Balancing Machine.Applied Mechanics and Materials. Trans Tech Publications, 2017. Vol. 870. P. 173‒178.

8. Diouf P., Herbert W. Understanding rotor balance for electric motors //Pulp and Paper Industry Technical Conference, Conference Record of 2014 Annual. IEEE, 2014. P. 7‒17.

9. Ziyakaev G.R., Pashkov E.N., Urnish V.V. Vliyanie treniya na tochnost' avtomaticheskoy balansirovki rotorov // V mire nauchnykh otkrytiy. Krasnoyarsk, 2013. No. 10.1 (46). P. 104‒117.

10. Doroshev Yu.S., Nestrugin S.V. Prakticheskaya balansirovka rotorov elektricheskikh mashin v sobstvennykh oporakh // Elektrobezopasnost'. 2016. No. 4. P. 3‒8.