Predictive simulation of mechanical behavior from 3D laser scans of violin plates

In this paper we present a methodology for the predictive simulation of the vibrometric behaviour of a violin plate. The 3D outer shape of the plate is acquired by means of a 3D laser scanner and then smoothed in order to remove artefacts and details that are unnecessary for the acoustics simulation. The thickness of the plate is incorporated into the model through a technique that receives as input the thickness sampled at some points of the plate and interpolates it over the entire surface. We validate this 3D reconstruction technique by comparing the vibrometric behaviour of the 3D model with data measured on the reference plate, and with simulations on a model with uniform thickness