Measured-based shaker model to virtually simulate vibration sine test

During high level vibration test on a high mass specimen, the test engineer is often facing
difficulty to pass properly the specified vibration level due to coupling between the
specimen and the shaker. The present paper present a methodology to define a virtual
shaker testing simulator. The first step involves the dynamic identification of a 80 kN shaker
performed thanks to measurements (modal analysis and sine sweep). The second step is
the definition of the physic represented in the simulator and the translation of the
electromechanical equations in a home-made simulator. Controller developed by SIEMENS
LMS and supplied to V2i for a use in the framework of the AOC project is introduced to close
the loop. Two test cases are described to demonstrate the possibilities offered by the
simulator.