The webinar reviews modal analysis and illustrate the characteristics of mode shapes and participation factors.
Peter Debney is Chartered Structural Engineer, a member of both the Institute of Structural Engineers (MIStructE) and the International Association for Bridge and Structural Engineering (IABSE), and a visiting lecturer at the University of Bradford. He is a Senior Consultant working for Arup in the Oasys software group as an application specialist for the structural and pedestrian modelling software suites.
About this webinar
When doing modal superposition dynamic responses analysis such as seismic, harmonic, and footfall analysis, a modal analysis needs to be done first. In GSA, there are two options to do modal analysis: one is eigenvector modal analysis (modal analysis) and one is Ritz vector modal analysis (Ritz analysis). This webinar explains the difference and the uses of the two modal analyses.
The webinar reviews modal analysis and illustrate the characteristics of mode shapes and participation factors. Before introducing Ritz analysis, modal superposition dynamic response analysis is summarised and from which the advantage of Ritz analysis is explained. Then the method and steps of doing Ritz analysis are presented and the characteristics of Ritz analysis are summarised. Finally, how to do Ritz analysis in GSA is demonstrated and when to and when not to use Ritz analysis is explained.