Iterative-Order-Reduction Substructuring Method for Dynamic Condensation of Finite Element Models

animprovediterativeorder-reductionmethodbasedonthestate-spacemodelisproposedfornonclassicallydamped systems by fully taking into account the effect of damping on the transformation matrix. By combining the original and improved iterative order-reduction schemes with the substructuring scheme, a new iterative order-reduction substructuring method is also proposed to overcome the problem of requiring more computational resources to constructthetransformationmatrixoflarge-scale finiteelementmodels.Theproposedmethodmaybeappliedtothe reduction problems of large-scale undamped and damped finite element models with limited computer storage and high computational efficiency. Two numerical examples are provided to demonstrate the effectiveness of the proposed method.

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