Open AccessSENSITIVITY OF STRENGTH, RIGID AND DYNAMIC CHARACTERISTICS OF THE CONSOLE ROTOR TO VARIATION OF DESIGN PARAMETERS
Author(s) -
Mykola Tkachuk,
Andrey Grabovskiy,
N. Ya. Prokopenko,
Mykola Tkachuk,
Oleksandr Shut,
Andrii Lipeiko,
Boris Litvin,
Egor Ovcharov,
Daria Mosnitska
Publication year - 2021
Publication title -
vestnik nacionalʹnogo tehničeskogo universiteta "hpi". mašinovedenie i sapr
Language(s) - English
Resource type - Journals
ISSN - 2079-0775
DOI - 10.20998/2079-0775.2021.1.13
Subject(s) - impeller , critical speed , rotational speed , rotor (electric) , vibration , cantilever , elasticity (physics) , rotation (mathematics) , helicopter rotor , natural frequency , structural engineering , sensitivity (control systems) , materials science , mechanical engineering , mechanics , acoustics , engineering , physics , mathematics , composite material , geometry , electronic engineering
The analysis sensitivity of strength, rigid and dynamic characteristics of the console rotor to variation of design parameters in paper describes The speed of rotation of the shaft, the material of the impeller vary. The dependences of radial and axial displacements on the angular velocities of rotation and the modulus of elasticity of the impeller material are established. For objects of the type of rotary systems with a cantilever arrangement of the impeller, not one, but a set of criteria has been introduced into consideration, which should be taken into account in the research of this type of objects. The tendencies of change of the first and second critical rotational speeds from the modulus of elasticity, rotor rotational frequencies and density of the impeller material are also determined. On this basis, recommendations have been developed for determining the design parameters of the rotor part of the air blower with a cantilevered impeller.Keywords: air blower; critical rotation speed; natural vibration frequency; rotary system; stress-strain state