Abstract
This article presents a methodology for the characterization of the dynamic properties of a laminated glass automotive ceiling, motivated by the inherent difficulty in obtaining laboratory samples from this kind of components. This methodology is based on the identification of the effective complex modulus of the laminated glass ceiling through Experimental Modal Analysis in conjunction with a finite element model. Besides, a material behaviour model is proposed for the effective complex module. Then, the dynamic properties of the laminated glass core are extracted from the latter using a reverse homogenized formulation of sandwich plates specifically developed in this work. As a result, a methodology to accurately predict the dynamic behaviour of these key automotive components has been achieved. An additional advantage of this methodology is that the identification of properties is carried out from a manufactured component and not from samples of reduced geometries, considering the impact of the manufacturing process.
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