CAJ | 학술논문

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，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。
건립인이이와적이유쌍향류고우합유한원모형，포함란원창、원창화기저막등막성결구，이와관도중충만류체，채용류체－결구쌍향류고우합동역학분석방법，재불동와공척촌시연구성음유란원창전체도기저막적궤제。이유문헌설치적와공척촌여인이해부문헌중적와공척촌삼수불일치，설치료삼개불동와공척촌적이와유한원모형，획득불동와공척촌대기저막향응적영향，동시험증료이와적빈솔선택특성，계산결과여보도적실험수거상일치。결과표명：설치합괄적와공척촌，가이획득여실험수거경접근적결과。
A 2-D finite element model of human cochlea was established here.This model included structures of oval window,round window and basilar membrane,the cochlea duct was filled with fluid.In order to study the effects of helicotrema on basilar membrane response,three different sizes of helicotrema were set up in the FE model.A two-way fluid-structure interaction numerical method was used to compute the response of the cochlea.The influence of the helicotrema was acquired and the frequency selectivity of the basilar membrane motion along the cochlear duct was predicted.These results agreed well with those of the reported experiments.The results indicated that the computed results closer to test data can be obtained with appropriate helicotrema size.