Modelamiento del comportamiento mecánico de las cuerdas vocales expuestas a una presión variable durante la fonación

Abstract

This study focuses on three essential components of the vocal folds, the body and ligament (considered linear elastic materials) and the lamina propria (considered viscoelastic material). Little attention has been paid to the mechanical properties of viscoelastic materials, and models such as the Kelvin-Voigt Model and the Maxwell Model have been explored, although they do not fit natural behavior. The Standard Solid Model has been chosen to compile the aforementioned models. Pulmonary pressure causes changes in the vocal folds due to their viscoelastic properties, leading to significant morphological alterations at a time of biological relaxation. During the research, discernible variations in mechanical behavior were observed, related to changes in vocal fold tissue, suggesting that these changes could reflect actual natural displacements.