For Response Spectrum Analysis in most of country codes code recommend to use Eigen Vectors, but in Etabs Ritz vectors are also used specially if we use vertical shaking and it is obsereved that ritz vector is fast. I couldnot get any mathematical analysis of ritz vector in details . Can you explain what is Ritz vector and do you recommend to use Ritz over Eigen or not ??
For Response Spectrum Analysis in most of country codes code recommend to use Eigen Vectors, but in Etabs Ritz vectors are also used specially if we use vertical shaking and it is obsereved that ritz vector is fast. I couldnot get any mathematical analysis of ritz vector in details . Can you explain what is Ritz vector and do you recommend to use Ritz over Eigen or not ??
great question.