Synthetic continuum models of the vocal folds, though only relatively recently developed, have found significant use in studying the flow-induced vibrations of the vocal folds. The advantages of these models include long lifetime and reasonable comparison with human vocal fold characteristics. However, the geometry typically employed is highly idealized, with uniformly shaped cross section and rigid mounting to rectangular plates. In this presentation, the development and characterization of a multi-component model of the human larynx is presented. The model includes the following synthetic components: multi-layer vocal folds consisting of materials with nonlinear stress-strain properties, cartilaginous and soft tissue framework, and posture control. The fabrication process, including extraction of geometric information from medical images, is summarized. Various aspects of the model are characterized to compare the model behavior with that of the human larynx. Measurements of the synthetic vocal fold material properties, including stress-strain dependence, tangent modulus, and Poissons ratio, are presented. Dependence on subglottal pressure of the model vibration frequency, flow rate, vibration amplitude, and other flow field and jet characteristics are quantified using high-speed imaging, flow visualization, and particle image velocimetry.
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