Some new developments of conjugation-based sparse approximate inverse preconditioners are considered in application to problems of solid and structural mechanics. A block version of the AINV algorithm and its stabilized modification are presented. The stabilized AINV algorithm, which in exact arithmetic is breakdown-free for any SPD matrix, is found to result in robust preconditioners even in difficult thin shell applications. © ECCOMAS.
On some new developments in approximate inverse preconditioning
Benzi, Michele;
2000
Abstract
Some new developments of conjugation-based sparse approximate inverse preconditioners are considered in application to problems of solid and structural mechanics. A block version of the AINV algorithm and its stabilized modification are presented. The stabilized AINV algorithm, which in exact arithmetic is breakdown-free for any SPD matrix, is found to result in robust preconditioners even in difficult thin shell applications. © ECCOMAS.File in questo prodotto:
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