A comprehensive study of the delay vector variance method for quantification of nonlinearity in dynamical systems.

ABSTRACT: Although vibration monitoring is a popular method to monitor and assess dynamic structures, quantification of linearity or nonlinearity of the dynamic responses remains a challenging problem. We investigate the delay vector variance (DVV) method in this regard in a comprehensive manner to establish the degree to which a change in signal nonlinearity can be related to system nonlinearity and how a change in system parameters affects the nonlinearity in the dynamic response of the system. A wide range of theoretical situations are considered in this regard using a single degree of freedom (SDOF) system to obtain numerical benchmarks. A number of experiments are then carried out using a physical SDOF model in the laboratory. Finally, a composite wind turbine blade is tested for different exci

SUBMITTER: Jaksic V 

PROVIDER: S-EPMC4736930 | biostudies-literature | 2016 Jan

REPOSITORIES: biostudies-literature