This paper presents a comparison between the experimental investigation and the Finite Element (FE) modal analysis of an\nautomotive rear subframe. A modal correlation between the experimental data and the forecasts is performed. The present\nnumerical model constitutes a predictive methodology able to forecast the experimental dynamic behaviour of the structure.\nThe actual structure is excited with impact hammers and the modal response of the subframe is collected and evaluated by the\nPolyMAX algorithm. Both the FEmodel and the structural performance of the subframe are defined according to the Ferrari S.p.A.\ninternal regulations. In addition, a novel modelling technique for welded joints is proposed that represents an extension of ACM2\napproach, formulated for spot weld joints in dynamic analysis. Therefore, theModal Assurance Criterion (MAC) is considered the\noptimal comparison index for the numerical-experimental correlation. In conclusion, a good numerical-experimental agreement\nfrom 50Hz up to 500Hz has been achieved by monitoring various dynamic parameters such as the natural frequencies, the mode\nshapes, and frequency response functions (FRFs) of the structure that represent a validation of this FEmodel for structural dynamic\napplications.
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