Abstract: The dynamic flexibility (DF) and improved dynamic flexibility (IDF) methods can be applied to extract constrained structural modes from free-free modal test data. The residual flexibility method is also good for boundaries ...

Abstract: The computation of many eigenvector derivatives is required in the fields of structural optimal design, and update and localization of model error. Existing methods, except for the incomplete truncated modal methods and a ...

Abstract: The theoretical derivation proposed in this paper uses a specific pseudoinverse technique baesd on an incomplete set of measured modes to satisfy the orthogonality condition. Unlike others, this method demonstrates that ...