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作者 Tuck-Lee, James Peter
書名 Finite element analysis of middle ear mechanics
國際標準書號 9780549244967
book jacket
說明 130 p
附註 Source: Dissertation Abstracts International, Volume: 68-09, Section: B, page: 6262
Adviser: Peter M. Pinsky
Thesis (Ph.D.)--Stanford University, 2007
An essential component in the process of hearing is the transformation of sound from acoustic to mechanical vibration in the middle ear. In order to study this phenomenon, computational models have been introduced to model the behavior of the tympanic membrane and its interaction with the surrounding acoustical spaces. Using such a computational model, one gains an increased understanding of the relationship between its structure and performance, which may assist in preventive, diagnostic, and reconstructive medical applications
The goal of this present work is to expand the computational simulation capabilities of current eardrum models using modern finite element modeling techniques. A fully coupled structural acoustic model is presented using modern shell element technology. Anatomical geometries for the eardrum, acoustic spaces of the ear canal and middle ear cavity, and the ossicles are utilized via muCT imaging
A new computational algorithm is used to compute the frequency response of this model over a wide frequency range. This approach uses the matrix Pade-via-Lanczos algorithm to construct reduced-order models around chosen reference frequencies, which can be solved efficiently at many frequencies within a frequency window. An adaptive algorithm is introduced to span a given frequency range by introducing new reference frequencies as necessary
Results for the middle ear model, using this multifrequency algorithm, are presented for intact and modified middle ear anatomies. These modifications serve to demonstrate the utility of the computational approach in understanding the relationships between the morphological structure of the middle ear and its functionality
School code: 0212
DDC
Host Item Dissertation Abstracts International 68-09B
主題 Health Sciences, Audiology
Engineering, Mechanical
Physics, Acoustics
0300
0548
0986
Alt Author Stanford University
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