dynamics; ﬁnite element model; measured modal data
Model updating techniques are used to update a ﬁnite element model of a structure so that an updated model predicts more accurately the dynamics of a structure. The
application of such an updated model in dynamic design demands that it also predict
the effects of structural modiﬁcations with a reasonable accuracy. This paper deals with the updating of a ﬁnite element model of a structure using measured modal data and its subsequent use for predicting the effects of structural modiﬁcations. An updated model is obtained by employing a method of model updating based on the constrained optimisation.Structural modiﬁcations in terms of mass and beam modiﬁcations are then introduced to
evaluate the updated model for its usefulness in dynamic design.