减少声带机械组织特性的数量：不可压缩性和平移假设的评估
Reducing the number of vocal fold mechanical tissue properties: evaluation of the incompressibility and planar displacement assumptions.
作者信息
Cook Douglas D, Nauman Eric, Mongeau Luc
机构信息
School of Mechanical Engineering, Purdue University, West Lafayette, Indiana 47907, USA.
出版信息
J Acoust Soc Am. 2008 Dec;124(6):3888-96. doi: 10.1121/1.2996300.
Abstract
The incompressibility and planar displacement assumptions were used to reduce the number of independent tissue parameters required for the characterization of a structural model of the vocal folds. The influence of these simplifying assumptions on the vibratory properties of the model was investigated. The purpose was to provide estimates of the error introduced by these assumptions. The variability in human tissue properties was accounted for through systematic variation of several material parameters. The modal properties of a vocal fold structural model were computed with each assumption and, in turn, were relaxed to determine their respective effects. The results indicated that the incompressibility assumption introduces little error. Errors introduced by the planar displacement assumption were found to depend on the ratio of the longitudinal stiffness and the transverse stiffness. Criteria for determining the compatibility of tissue property values from independent studies are also presented.
摘要
采用不可压缩性和平移假设来减少描述声带结构模型所需的独立组织参数数量。研究了这些简化假设对模型振动特性的影响。目的是估计这些假设引入的误差。通过系统改变几个材料参数来考虑人体组织特性的变异性。对声带结构模型的模态特性进行了每种假设下的计算，进而放松这些假设以确定它们各自的影响。结果表明，不可压缩性假设引入的误差很小。发现平移假设引入的误差取决于纵向刚度与横向刚度的比值。还提出了确定独立研究中组织特性值兼容性的标准。
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