Finite Element Model of Human Cochlea Considering of the Helicotrema Size

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Journal of Vibration and Shock ›› 2014, Vol. 33 ›› Issue (23) : 58-62.

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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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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.

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cochlea / helicotrema / basilar membrane / finite element model / fluid-structure interaction

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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