Studying The Vocal Fold Vibration Using A Nonlinear Finite-Element Model

The vocal fold vibration and voice production are highly complex nonlinear processes. Nonlinear relationship of glottal pressure to airflow and the nonlinearities of vocal fold collision are two important nonlinear factors of vocal fold vibration. In this paper, we will study the vocal fold vibration using a nonlinear finite-element model. In this model, the nonlinear relationship of glottal pressure to airflow, the nonlinearities of vocal fold collision, and the interaction between the airflow and vocal folds are taken into account. The impact pressure, vocal fold vibration, and glottal pressure under various lung pressures are studies. The results show that the nonlinear finite-element model is a useful tool for studying the voice production and predicting mechanical trauma leading to injurious abuse, misuse of the voice and vocal nodule.