Balance Method Study Of Rotor System With Inital Bow

Presently, high speed rotating machine has been more and more used in the every department of country producing, it also has been the important and key equipment in them, and the rotor system is the core part in the high speed rotating machine. When the rotor is rotating, because of some reasons, it's center inertia principal axis departure from the rotating axis, so leading the unbalance, this unbalance will seriously affect the natural run of the rotor, even will get break to the equipment relatively. There are many reasons lead the unbalance in the rotor system, to the aspect of the large work frequency libration, it's mainly because of the mass eccentricity or the initial bow in the rotor. To the former it has some mature dynamic balance methods, but laying aside levelly long time or the asymmetry of the circumstance temperature can both lead some degree of initial bow in rotor, to this kind of rotor system with the initial bow, using the traditionary dynamic balance methods has can never been welly solve the problem of the large unbalance libration in the running course, so the dynamic balance method aims at the rotor system with initial bow which has been studied out by this article will give prodigious help to solve the problem, it also will have very wide foreground in the actual engineering application.This article firstly sets up the math model of the rotor system with initial bow, then using relatively concrete calculate gets the commonly libration response identities of the rotor system with initial bow, then basing these identities thinks out a kind of single plane adding emendation mass dynamic balance method which based the mode balance, this dynamic balance method is used to balance the rotor system with initial bow, this method through out the calculation of emulational simulation can be proved to be correct and effective; in the following this article again studies out a kind of initial bow online identify method by test-mass once, using this method to identify initial bow of the rotor system in the experiment or the actual engineering is very simple and convenient and also efficient; at last this article does the dynamic balance experiment of the real rotor system with initial bow, using the initial bow identify method of the rotor system which this article brings forward successfully identifies out the initial bow in the experimental rotor system, then again using the dynamic balance method that aims at the rotor system with initial bow which this article brings forward does the dynamic balance to the experimental rotor system, successfully validates that the method assuredly can well balance the initial bow of the rotor system in the real experiment, so it can be proved that the dynamic balance method is viable in the applications of the actual engineering.All in all, this article mainly studies the rotor system with initial bow, the key is to study out one dynamic balance method which aims at the rotor system with initial bow, this method has been proved to be correct effect and viable in the academic study and experimental test, so studying out this method will have some developmental meaning of the application in the actual engineering.