Advances in vibration testing and model updating for nonlinear aerospace structures
For lighter,stronger and more flexible aerospace structures,the nonlinear phenomena ob-served during ground vibration tests and in-service operations are first sorted out.Two types of typic-al nonlinear structures-localised and distributed nonlinear structures-are then highlighted,the basic concepts of which are explained.Secondly,the vibration testing techniques developed for these nonlin-ear structures are compared,and the research progress is summarised from the perspective of fre-quency response test,pure modal test,free decay test and others.Finally,model updating procedures of the two types of nonlinear structures are analysed,with identification methods discussed.Future perspectives are pointed out and research suggestions are also highlighted.It is expected to provide a useful reference for the future development of vibration testing techniques and accurate modelling methods of nonlinear aerospace structures.
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维普
