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A simple algorithm for localized construction of non‐matching structural interfaces
Authors:K. C. Park  C. A. Felippa  G. Rebel
Abstract:
A simple and effective algorithm for the modular construction of non‐matched interfaces is presented for the partitioned solution of large‐scale structural problems. The formulation is based on a recently developed four‐field variational principle, which introduces a connection frame between the interfaced partitions. A key result of the present study is a frame nodal placement criterion that uniquely determines the frame discretization into piecewise linear elements so that the interface patch test condition is satisfied a priori. The method is demonstrated with several 2D and 3D example problems. Copyright © 2002 John Wiley & Sons, Ltd.
Keywords:non‐matching grids  interface patch test  localized Lagrange multipliers  partitioned analysis  four‐field variational principle  interface frame concept
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