Abstract
Nowadays, rotating machines tend to operate at high speeds and sometimes, in complex situations such as on moving support. Thus, accurate prediction of their dynamic behavior must be made to ensure a reliable design. In this paper a finite element model is developed, to simulate the dynamic behavior of a flexible rotor with constant/variable spin speed, supported by a rigid base undergoing a general movement. Simulation results are presented and discussed for different cases of base movements and running speed variations.
Highlights
Rotor-bearing systems are parts of industrial machines such as turbines, compressors, pumps and engines
Han and Chu [13] studied the dynamic behavior of cracked rotor-bearing system subjected to harmonic base angular motions using the harmonic balance method
A finite element model of a geometrically symmetric rotor is developed, and a computer code is elaborated, on the basis of a software accompanying [3]. This allows analyzing the dynamic behavior of on-board rotors under variable rotational speed such as during startup and shut down
Summary
Rotor-bearing systems are parts of industrial machines such as turbines, compressors, pumps and engines. Han and Chu [13] studied the dynamic behavior of cracked rotor-bearing system subjected to harmonic base angular motions using the harmonic balance method. We use similar representations of rotor and base movements to study onboard rotors running at variable rotational speed For this aim, a finite element model of a geometrically symmetric rotor is developed, and a computer code is elaborated, on the basis of a software accompanying [3]. A finite element model of a geometrically symmetric rotor is developed, and a computer code is elaborated, on the basis of a software accompanying [3] This allows analyzing the dynamic behavior of on-board rotors under variable rotational speed such as during startup and shut down.
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