Finite element updating
Herein, its effectiveness is validated through the fatigue assessment of a lively footbridge considering two different numerical models: (i) a preliminary finite element (FE) model and (ii) an updated version of the preliminary model based on the modal parameters of the footbridge identified experimentally.
Inconsistency in the frequency results due to erroneous inputs of geometrical and material parameters to the finite element analysis can be salvaged by applying the finite element model updating procedure.
Two updating cases show that the optimization sequences converge quickly and significant improvements in frequency prediction are achieved.
Experimental and operational modal analysis and simulation make benefit from common databases.
Some applications presented emphasize the advantages of these techniques.The purpose of the different settings is to get the best numerical riveted lap joint representation relatively to the experimental one.