Modeling of the human middle ear using the finite-element method
Modeling of the human middle ear using the finite-element method
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DOI：
10.1121/1.1451073
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发表时间：
2002-03-01
影响因子：
2.4
通讯作者：
Kobayashi, T
中科院分区：
文献类型：
--
作者：
Koike, T;Wada, H;Kobayashi, T
在这项研究中，建立了一个三维有限元模型（FEM）的人中耳，包括中耳的特点，没有考虑在以前的模型，即。韧带肌腱I-S关节，耳蜗负荷。外耳道（EAM），中车腔。确定这些部件的未知机械特性和边界条件，使得从FEM分析获得的阻抗与测量值相似。该模型的有效性得到了证实，通过比较由该模型获得的鼓膜和听骨的运动与测量数据，并检查了新考虑的功能上的数值得到的结果的影响。通过将韧带和肌腱考虑在内，并假设耳蜗充当阻尼器，使用该模型可以真实地再现复杂的听骨链运动。结果发现，中耳腔不影响鼓膜的振动模式。虽然EAM增强了施加到鼓膜上的声压，与EAM入口处相比，鼓膜表面上的压力分布不受EAM的影响。(C)2002年美国声学学会。
In this study, a three-dimensional finite-element model (FEM) of the human middle ear was established, including features of the middle ear which were not considered in the previous model, i.e.. the ligaments. tendons. I-S joint, loading of the cochlea. external auditory meatus (EAM), middle-car cavities. etc. The unknown mechanical properties of these parts and the boundary conditions were determined so that the impedance obtained from the FEM analysis resembled the measurement values. The validity of this model was confirmed by comparing the motion of the tympanic membrane and ossicles obtained by this model with the measurement data, and the effects of the newly considered features on the numerically obtained results were examined. By taking the ligaments and tendons into account and assuming that the cochlea acts as a damper, with this model it was possible to realistically reproduce complex ossicular chain movement. It was found that the middle-ear cavities did not affect the vibration mode of the tympanic membrane. Although the EAM enhanced the sound pressure applied to the tympanic membrane compared with that at the entrance of the EAM, the pressure distribution on the surface of the tympanic membrane was not affected by the EAM. (C) 2002 Acoustical Society of America.