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Study of the efficiency of iterative methods for linear problems in structural mechanics
Chalmers University of Technology.
Chalmers University of Technology.
1986 (Engelska)Ingår i: International Journal for Numerical Methods in Engineering, ISSN 0029-5981, E-ISSN 1097-0207, Vol. 22, nr 1, s. 209-218Artikel i tidskrift (Refereegranskat) Published
Abstract [en]

The efficiency of iterative methods in linear structural mechanics is studied. The efficiency concerns the calculation time, the numerical accuracy and the core storage needed. We state that iterative methods are effective in connection with hierarchical improvement of a primary approximation. Three iterative methods are studied: the conjugate gradient method preconditioned by a modified incomplete factorization matrix, the same method preconditioned by a matrix obtained from natural factors on elemental level, and a Jacobi integration preconditioned by viscous relaxation split in an element-by-element way. We make comparisons with direct methods, Gaussian elimination and factorization by use of natural factors.

Ort, förlag, år, upplaga, sidor
1986. Vol. 22, nr 1, s. 209-218
Nationell ämneskategori
Infrastrukturteknik
Forskningsämne
Konstruktionsteknik
Identifikatorer
URN: urn:nbn:se:ltu:diva-10246Lokalt ID: 90618f90-8e34-11de-8da0-000ea68e967bOAI: oai:DiVA.org:ltu-10246DiVA, id: diva2:983186
Anmärkning
Upprättat; 1986; 20090821 (ysko)Tillgänglig från: 2016-09-29 Skapad: 2016-09-29 Senast uppdaterad: 2017-11-24Bibliografiskt granskad

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