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Improved free-interface substructures representation method
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DOI：10.1016/S0045-7949(99)00219-9.png)
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Abstract
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The purpose of this paper is to present a method of free interface substructuring. It shows substructure mass and stiffness coupling in the condensed model. Reduction is performed by means of a new consistent transformation, which leads to a condensed model without junction coordinates. We also intend to show a variant which allows a condensed model to be obtained in physical coordinates. Finally, a second level modal condensation in physical coordinates is presented, so that the resulting model may be reduced even more. Such a model allows direct comparison between measurements and calculations. (C) 2000 Elsevier Science Ltd. All rights reserved.
Keywords:
substructuring
free-interface modes
junction dof elimination
congruent transformation
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