Numerical Analysis of the Resource Characteristics Radial Impellers of Turbomachine Rotors

Many authors have shown that sensitivity analysis is a well-known numerical method calculated on the basis of studying the natural frequency vibrations of a structure depending on a set of design parameters. But in many scientific works, both in Russia and in other countries, it is noted that there is practically no numerical analysis of the vibration sensitivity of turbomachine rotors, taking into account rotation and temperature. It also does not actually study the numerical analysis of the resource characteristics of complex mechanical products such as radial impellers of turbomachines. In this regard, mathematical modeling and numerical analysis of the resource characteristics radial impellers of turbomachine rotors is an urgent scientific task. In this work, the author for the first time considered the quadratic law of temperature change with the speed of rotation impeller to simulate vibration modes and their sensitivity to changes in the degree of deformation of radial blades and the prediction of the amount of cyclic loading with a trapezoidal shape before the destruction impeller of turbomachines.