Optimizing Material Properties and Geometry of a Physical Multi-Layered Vocal Fold Model

摘要

The vocal fold deformations measured in the hemilarynx experiments do not correspond very well to the material parameters known from literature. We use a mathematical approach in order to find material parameters generating boundary displacements, which match the measured deformations as close as possible. Optimizing material parameters in our multi-layered vocal fold model already generates a much better result. It turns out that using shape optimization and thus allowing moderate changes in the geometry of the material layers, leads to further improvement while keeping the vocal fold model simple enough for the manufacturing process. The best results are achieved by simultaneous material and shape optimization.