Abstract
Finite-element modal analysis studies of several vocal fold structural models were performed in vacuo under a variety of assumptions. The sensitivity of the vocal folds to changes in geometry and tissue properties was investigated. The Ritz method and the finite-element code adina were used to perform linear modal analysis of two-dimensional and three-dimensional models of the human vocal folds. The results allow for comparison and evaluation of various modeling approaches. In particular, the influence of geometrical constraints was shown to introduce errors of varying magnitude depending on the degree of anisotropy of the vocal fold tissue. [Research supported by the National Institute for Deafness and Other Communication Disorders.]
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