Detection and quantification of structural non-linearities
J. Wong, J. E. Cooper, J. R. Wright · Research Explorer (The University of Manchester) · 2002
A number of different approaches (higher order spectra, higher orderFRFs and multi-sines) for the detection and quantification of non-linearities were applied to various simulated two and three degree of freedom systems with quadratic and cubic stiffness nonlinearities. The ability to use the methods to determine whether non-linearities exist, and to classify them, was assessed, and conclusions are drawn as to their suitability to perform this task.