Finite elements analysis of the vibrational response of an adhesively bonded beam

This paper presents a finite element analysis to determine the influence of geometrical properties of adhesive joints on the vibrational response of a metallic beam doubly supported on adhesive joints. This research is based on a previous experimental analysis in which it was concluded that larger experiments or numerical simulations are necessary in order to separate and investigate the influence of length, thickness and material of the adhesive joint. The finite element model is previously validated using experimental results for the transient response, mode shapes and transmissibility functions. Then, for the study, the model of the beam is seismically excited and the influence of joint thickness, overlapping length and adhesive properties on the beam motion is analyzed using the root mean square value of twenty-one transmissibility functions obtained from across the length of the beam. The study analyses resonance frequencies, peak amplitudes, and modal loss factors.