考虑蜗孔尺寸的人耳耳蜗有限元模型研究

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振动与冲击 ›› 2014, Vol. 33 ›› Issue (23) : 58-62.

论文

考虑蜗孔尺寸的人耳耳蜗有限元模型研究

许立富，塔娜，饶柱石，田佳彬

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Finite Element Model of Human Cochlea Considering of the Helicotrema Size

XU Li-fu, TA Na, RAO Zhu-shi, TIAN Jia-bin

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文章历史 +

摘要

建立人耳耳蜗的二维双向流固耦合有限元模型，包含卵圆窗、圆窗和基底膜等膜性结构，耳蜗管道中充满流体，采用流体-结构双向流固耦合动力学分析方法，在不同蜗孔尺寸时研究声音由卵圆窗传递到基底膜的机制。已有文献设置的蜗孔尺寸与人耳解剖文献中的蜗孔尺寸参数不一致，本文设置了三个不同蜗孔尺寸的耳蜗有限元模型，获得不同蜗孔尺寸对基底膜响应的影响，同时验证了耳蜗的频率选择特性，计算结果与报道的实验数据相一致。结果表明：设置合适的蜗孔尺寸，可以获得与实验数据更接近的结果。

Abstract

A 2-D finite element model of human cochlea is established in this paper. This model includes the structure of oval window, round window and basilar membrane, fluid filled with the cochlear duct. In order to study the effects of helicotrema on basilar membrane response, three different dimensions of helicotrema are set up in the FEM. A two-way fluid-structure interaction numerical method is used to compute the response in the cochlea. The influence of the helicotrema is acquired and the frequency selectivity of the basilar membrane motion along the cochlear duct is predicted. These results agree with the experiments and indicate more true results are obtained with appropriate helicotrema size.

导出引用

许立富;塔娜;饶柱石;田佳彬. 考虑蜗孔尺寸的人耳耳蜗有限元模型研究[J]. 振动与冲击, 2014, 33(23): 58-62

XU Li-fu;TA Na;RAO Zhu-shi;TIAN Jia-bin. Finite Element Model of Human Cochlea Considering of the Helicotrema Size[J]. Journal of Vibration and Shock, 2014, 33(23): 58-62