MODELLING OF DYNAMIC BEHAVIOUR OF TRANSPORT MACHINES RANDOM EXCITED STRUCTURES

Abstract

The paper is dealing with a newly developed method of identification of mechanical dynamic structures. This method is based on building statistically significant Vector Autoregresive Moving Average (ARMAV) models of random excited structures that define statistically significant modes of structure vibration. Once having ARMAV models of a structure it is very easy to simulate its behaviour by both stochastic and deterministic excitation in form of time series. The application is demonstrated on an example of Finite Element Model of simple structure using adaptive method of identification that can deal with non-stationary behaviour of structure also.

Keywords

• mechanical dynamic system
• stochastic time series
• autoregressive model