Modeling of Rotating Shaft with Partial Rubbing

Abstract

We have created the rotating machinery library to carry out analytical investigations for diagnosis by transfer matrix method in Modelica. In this paper, rubbing components for partial rub are implemented in our rotating machinery library. In this research, the model in which the rotor come into contact from a non-contact state by a pulsating external force is analyzed. The relationship between the contact configurations and the generation of various kinds of vibration is investigated. We validated the rubbing model in one side contact case with a rotor kit. By simulation, we reproduced the time history, the orbit and the full spectrum characteristics of the rotating shaft measured by the experiment precisely.

Unbalance Response Analysis of a Rotor Kit with Two Identical Discs Located Between Bearings

“…To achieve a better understanding of rotor dynamic behaviour, experimental research is often carried out on a rotor kit that is specially designed to simulate behaviour of the actual rotor [4][5][6][7][8]. Investigations of unbalance response were mainly carried out on a single-disc rotor kit.…”