Dynamics of rotors in complex structures N. Wagner, R. Helfrich INTES GmbH, Stuttgart, Germany www.intes.de; info@intes.de Summary: Rotating parts can be found in many mechanical products like in vehicles, airplanes, ships, machine tools. Because rotors are never perfect, imbalances are generating vibrations which not only excite the rotor itself but also other joint non-rotating parts. This coupling of rotating and non-rotating parts is an important point for virtual product development of parts with rotors. First, the principles of modeling and analysis of rotors are revisited and usual post-processing features of rotor analysis results are shown. Second, an example for a joint structure with rotating and non-rotating parts is used to demonstrate the coupling effect. In particular, sound radiation from non-rotating parts due to imbalances of the rotor will be considered. NAFEMS World Congress: June 9 - 12, 2013, Salzburg, Austria – 1–