Experimental and numerical analysis of the modal behavior of squirrel cage rotors

This paper presents a parameter fitting process for dynamic FE models of squirrel cage rotors. The process is based on an experimental database and considers statistical approaches for the parameter sensitivity analyses of FE models. Parameters are optimized using evolutionary optimization algorithms. The quality of results is checked using the database and extended experimental investigations carried out on special test benches. Derived from this it can be shown that the FE model is also a good fit for calculation the strength within squirrel cage.