Uncertain Parameters In Rotor Dynamics Modeling,Clculation And Method Of Communication

In view of the low efficiency of the monte carlo calculation,this paper proposes an efficient model of the uncertain parameters calculation method,generalized polynomial theory,And its application in linear structure system,nonlinear structural system more and more of the rotor system.In the process of modeling calculation,analyzed the different parameters in the system uncertainty fluctuations,the response characteristics of the system.This paper also analyzes the system of propagation theory,the uncertain parameters of uncertain parameters according to different system corresponding to different uncertainty propagation analysis method is given.Of uncertain parameters and different propagation theory is applied to the structure parameters of the system and the rotor system,through calculation and analysis concluded that compared with the sensitivity algorithm for uncertainty propagation theory results more accurate and better robust design was carried out on the system.Finally designs the uncertainty,the mechanism of the rotor system test device according to the actual support equivalent stiffness fluctuation characteristics of the uncertainty of actual support system are given,finally through the test results compared with the results of finite element,the uncertainty of the full text to verify problems modeling,calculation,propagation analysis method is effective.