Department Mathematics, Applied Mathematics II, University of Erlangen, Cauerstrasse 11, 91058 Erlangen, Germany.
J Acoust Soc Am. 2013 Aug;134(2):1261-70. doi: 10.1121/1.4812253.
Commonly applied models to study vocal fold vibrations in combination with air flow distributions are self-sustained physical models of the larynx consisting of artificial silicone vocal folds. Choosing appropriate mechanical parameters and layer geometries for these vocal fold models while considering simplifications due to manufacturing restrictions is difficult but crucial for achieving realistic behavior. In earlier work by Schmidt et al. [J. Acoust. Soc. Am. 129, 2168-2180 (2011)], the authors presented an approach in which material parameters of a static numerical vocal fold model were optimized to achieve an agreement of the displacement field with data retrieved from hemilarynx experiments. This method is now generalized to a fully transient setting. Moreover in addition to the material parameters, the extended approach is capable of finding optimized layer geometries. Depending on chosen material restriction, significant modifications of the reference geometry are predicted. The additional flexibility in the design space leads to a significantly more realistic deformation behavior. At the same time, the predicted biomechanical and geometrical results are still feasible for manufacturing physical vocal fold models consisting of several silicone layers. As a consequence, the proposed combined experimental and numerical method is suited to guide the construction of physical vocal fold models.
通常用于研究声带振动与气流分布的模型是由人工硅胶声带组成的喉的自维持物理模型。在制造限制下，为这些声带模型选择适当的机械参数和层几何形状对于实现逼真的行为是困难但至关重要的。在 Schmidt 等人的早期工作中[J. Acoust. Soc. Am. 129, 2168-2180 (2011)]，作者提出了一种方法，即用静态数值声带模型的材料参数进行优化，以实现位移场与半喉实验数据的一致。现在，该方法已推广到完全瞬态设置。此外，除了材料参数之外，扩展方法还能够找到优化的层几何形状。根据所选材料限制，预测会对参考几何形状进行重大修改。设计空间中的额外灵活性导致更逼真的变形行为。同时，预测的生物力学和几何结果仍然适用于制造由几个硅胶层组成的物理声带模型。因此，所提出的组合实验和数值方法适合指导物理声带模型的构建。
