ON AN EXTENSION OF CLASSICAL MODAL REANALYSIS ALGORITHMS - THE IMPROVEMENT OF INITIAL MODELS

摘要

An extension of the field of applications of classical modal reanalysis procedures is described, for the case when the number of degrees of freedom of a modified structure is greater than that of the initial structure. This feature is not developed classically, and such a case is usually resolved by the use of modal synthesis methods. A pure modal reanalysis procedure, with all the theoretical developments, is presented here. It is shown that any classical reanalysis algorithm can be used as the basis of the method. A characteristic example is presented, and modal results are discussed and compared with those of a classical reanalysis procedure. (C) 1995 Academic Press Limited [References: 10]