Abstract
This paper provides a uniform basis for comparison of most existing linearized parameter refinement procedures which have been proposed in structural dynamics. The manner in which this is achieved is to establish a consistent first-order theory based upon linearized perturbations of the structural dynamic parameters and responses. Free and steady-state vibration equations are considered. The equivalence between Taylor Series-based expansion methods (to produce parameter updating equations) and the various equation-error methods, are then established. An explanation is offered for the empirical result that eigenvalue adjustment-based parameter improvement procedures often appear to produce superior results, in comparison to the use of other error criteria. A realistic numerical example displaying this phenomenon is provided. Computational considerations for solution of the resulting parameter equation sets are also discussed herein.
Original language | English (US) |
---|---|
Pages (from-to) | 139-150 |
Number of pages | 12 |
Journal | Modal analysis |
Volume | 9 |
Issue number | 2 |
State | Published - Apr 1994 |
Externally published | Yes |
All Science Journal Classification (ASJC) codes
- General Engineering