Structural Model Updating of Frequency Response Function Based on Kriging Model

Abstract

In order to improve the efficiency of frequency response function (FRF)-based model updating, Kriging model is introduced into optimization procedure, where Kriging model replaces the finite element model (FEM) for iteration. The objective function is established based on the error of FRF data at selected frequency points. Kriging model is constructed based on sampling points generated by design of experiment. The model updating of GARTEUR structure is performed as a numerical case study, the FRF of FEM is successfully updated to match the experimental FRF. It can demonstrate the effectiveness of the application of Kriging model in FRF based model updating.