Introduction

During the last years, a MATLAB® toolbox for simulation of rotating machines has been developed at the Chair of Applied Mechanics of the Technical University of Munich. For the geometry of a rotor, a 2D silhouette can be given by a simple point description. Then, a mesh of beam elements is created which are assembled into a MCK-model. In the next step, different components like bearings, external forces and loads (e.g. unbalance) are added to the system. It is also possible to add time-variant loads and nonlinear or even active components, e.g. magnetic bearings. Different types of analysis can then be performed, like modal analysis, Campbell diagrams or time integration. The whole toolbox is programmed in an object oriented way. The code is meant to be a research code which focuses more on easy architecture than on execution performance. The goal is to enable easy implementation of new components with own methods and testing them.

Paper with reference to the toolbox and more specific information about the mathematical background are:

1

AMrotor – A MATLAB Toolbox for the Simulation of Rotating Machinery, Johannes Maierhofer, M.Kreutz, T.Mulser, T. Thümmel, D. Rixen.

2

Comparison of different time integration schemes and application to a rotor system with magnetic bearings in Matlab, Michael Kreutz, J. Maierhofer, T. Thümmel, D. Rixen