Reduced basis techniques and the method of mode-acceleration are applied to transient analysis of simple beam and truss structures. It is noted that the method of mode-acceleration effectively recovers the first Ritz vector used in Ritz procedures. The theoretical basis for Lanczos algorithms that generate Ritz vectors is explained. Both mode-acceleration and Ritz procedures are found, generally, to be more accurate than mode-displacement in calculation of transient shear stresses, moments and normal stresses. Reanalysis using Ritz vectors is discussed following Kitis and Pilkey [9] and Noor and Lowder [10].
A Comparison of Mode-Acceleration and Ritz Vector Reduced Basis Procedures in Transient Analysis
Sae Technical Papers
International Conference on Vehicle Structural Mechanics ; 1988
01.04.1988
Aufsatz (Konferenz)
Englisch
A comparison of mode-acceleration and ritz vector reduced basis procedures in transient analysis
Kraftfahrwesen | 1988
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