Research of dynamic unbalance of a rotating mechanical system

Abstract

The paper presents the results of development of an automated laboratory complex for the study of dynamic reactions of bearings of a rotating mechanical system. This complex includes an electromechanical model unit equipped with sensors for measuring reactions and angular speed of the system rotation, a power supply and control unit and a PC for processing the results of measurements and calculations of dynamic reactions. The theoretical basis for calculating the dynamic reactions of the unbalanced rotating mechanical system bearings is given, and a description of the research laboratory complex is provided. The results of experimental determination of these reactions as well as the corresponding calculated dependences of the latter on the angular speed of rotation and the degree of system unbalance are presented. The presence of a region of mechanical system insensitivity to its dynamic unbalance caused by the effects of friction in the bearings is confirmed. There is a good agreement between the proposed method for calculating dynamic reactions of rotating mechanical system bearings and experimental data on their measurement. The effectiveness of the developed laboratory complex in the training process at higher school when teaching the appropriate section of theoretical mechanics is noted.