In his thesis, Dr.-Ing. Christian Sprock has developed a new approach for the vibration analysis of non-linear structures with a transfer behavior depending on the excitation amplitude. A focus was put on the determination of the non-linear behavior by measurements with significantly reduced effort and taking as little time as possible. The procedure is based on a measurement method, which allows an efficient determination of the non-linear characteristics of the structure under test using special multi-harmonic excitation signals. In combination with an advanced evaluation algorithm, a full description of the dynamic behavior can be generated in the form of a characteristic diagram.
The measurement procedure is supplemented by an identification routine, which can further reduce the required number of measurements. It is implemented as a measuring system in hardware and software. The functional verification was carried out using various examples.
The PhD thesis of Dr. Sprock is available here. His Publications are listed here.