Rotordynamics Rotor Bearings Foundation Dynamical behaviour of rotors 1 Dynamical behaviour of rotors 2 Direct problem 1 Direct problem 2 Direct problem 3 Direct problem 4 Direct problem 5 Dynamical behaviour of rotors 3 Inverse problem 1 Inverse problem 2 Inverse problem 3 Inverse problem 4 Inverse problem 5 Inverse problem 6 Exciting causes