ABSTRACT
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 (e.g 1D Timoshenko) is created which are assembled into a MCK-model using the finite element method. 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.
This contribution will give a short overview of the structure behind the toolbox and its capabilities will be highlighted. Using a real application of a test rig with active magnetic bearings, the code is demonstrated and shown to give good results. For industry, the toolbox can be a very useful tool to make small simulations for estimating properties of simple rotating machines.
