Why are Ritz vectors
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recommended for dynamic analysis?
Answer: For dynamic analysis, Ritz vectors are recommended over Eigen vectors because, for the same number of modes, Ritz vectors give you provide a better participation factor than do Eigenvectors. Therefore, which enables the analysis should to run faster to get with the same level of accuracy using Ritz rather than Eigenvectors. For certain types of loading, such as . When analysis involves ground motion in the horizontal plane, the benefit is not as pronounced. However, for vertical acceleration, localized machine vibration, and the nonlinear FNA method, Ritz vectors are much better than Eigenvectors. For horizontal ground acceleration on typical building structures, it is not so critical.more well-suited for analysis.