AN ALGEBRAICALLY PARTITIONED FETI METHOD FOR PARALLEL STRUCTURAL-ANALYSIS - PERFORMANCE EVALUATION

This paper presents the algorithmic performance of an algebraically pa rtitioned Finite Element Tearing and Interconnection (FETI) method pre sented in a companion paper. A simple structural assembly topology is employed to illustrate the implementation steps in a Matlab software e nvironment. Numerical results indicate that the method is scalable, pr ovided the iterative solution preconditioner employs the reduced inter face Dirichlet preconditioner. A limited comparison of the present met hod with the differentially partitioned FETI method with corner modes is also offered. Based on this comparison and a reasonable extrapolati on, we conclude the present algebraically partitioned FETI method poss esses a similar iteration convergence property of the differentially p artitioned FETI method with corner modes. (C) 1997 by John Wiley & Son s, Ltd.