Projector preconditioning and transformation of basis in FETI-DP algorithms for contact problems

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61989100%3A27240%2F12%3A86083666" target="_blank" >RIV/61989100:27240/12:86083666 - isvavai.cz</a>
Alternative codes found
RIV/61989100:27740/12:86083666
Result on the web
<a href="http://dx.doi.org/10.1016/j.matcom.2010.10.031" target="_blank" >http://dx.doi.org/10.1016/j.matcom.2010.10.031</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1016/j.matcom.2010.10.031" target="_blank" >10.1016/j.matcom.2010.10.031</a>

Result language
angličtina
Original language name
Projector preconditioning and transformation of basis in FETI-DP algorithms for contact problems
Original language description
Two strategies, using edge averages, for FETI-DP (dual-primal finite element tearing and interconnecting) methods for contact problems are considered. The first one is a preconditioning technique by a conjugate projector, where the Lagrange multipliers corresponding to the variables of the coinciding edges are aggregated. The second one is an explicit transformation of basis introducing edge averages as new, additional primal variables. It is shown that both methods iterate in the same space and thus have the same rate of convergence. The theoretical result is confirmed by the solution of a model boundary variational inequality.
Czech name
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Czech description
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Type
J<sub>x</sub> - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)
CEP classification
BA - General mathematics
OECD FORD branch
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Publication year
2012
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

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