Identification of dynamic parameters of linear and non-linear structural models from experimental data

Abstract Recent and new approaches to the identification of dynamic properties such as damping, eigenfrequencies, mode shapes, and non-linear effects are described. Special attention is paid to the philosophical and practical aspects of identifying such eigenparameters, as others have done much work in the adjustment of mass and stiffness parameters to reproduce these eigenparameters (once they are found). Application to an actual structure is discussed in an attempt to illustrate the effectiveness of the method and familiarize the reader with the type of problems encountered. A summary of typical procedures for vibration testing and parameter identification is presented.