A Study on Cochlear Travelling Waves by Finite Element Analysis of Fluid-Structure Interaction
Cochlea is a significant structure in the hearing system of humanity. Its unique structure enablessensibility to sound waves of varied frequencies. The widely accepted model of cochlea is expressed as a longtube longitudinally divided by a membrane named basilar membrane(BM), into two fluid-filled channels.Cochlear mechanics has been studied mostly either focusing on cochlear fluids or on BM. However, they interacteach other closely and the interaction has not been thoroughly studied. In recent years, the interactive mechanismand dynamic problems of the cochlea as a combined entirety attract increasing attention. In this paper, a 2-D FEMmodel is built to study the mechanism of cochlear dynamics. The model consists of two channels of varying crosssections. And the channels are separated by an elastic membrane, representing the BM, which terminates near thenarrow end of the model, where the two channels are interconnected. Numerical solutions are obtained using theFSI (fluid-structure interaction) solver. The motion of BM is studied, and the travelling wave discovered by VonBogert”s work, in which theoretically the slow compressive waves travelling along the BM were proposed.
cochlea travelling wave Finite-element method fluid structure interaction
Ren Liujie Hua Cheng
Department of Mechanics and Engineering Science of Fudan University ,Shanghai 200433 ,China
国内会议
哈尔滨
英文
1-10
2011-08-22（万方平台首次上网日期，不代表论文的发表时间）