Nonlinear system identification of frictional effects in a beam with a bolted joint connection
Nonlinear system identification of a bolted beam assembly is performed. Reduced order models with forcing are developed to reproduce experimental data. The forcing terms are derived directly from the measured dynamics. The forcing terms provide important information about nonlinear friction effects. The damping nonlinearities, and their modal and spatial distributions are identified.
nonlinear system identification bolted joint empirical mode decomposition