
基于组织切片数据的中耳鼓膜有限元分析
Finite element modeling of the human tympanic membraneby using sections of polymer-embedded temporal bone
采用不脱钙颞骨组织切片技术获得中耳鼓膜的三维形态数据,利用HyperMesh软件通过比较不同单元类型的网格,提出了用四边形和三角形混合单元对鼓膜进行网格划分的高效高精度方法;并将分网后的模型导入ANSYS有限元分析软件。在进行了不同声强作用下的静力学特性、鼓膜的固有振动特性以及在不同频率作用下的谐响应分析后,将结果与其它文献中的计算和实验数据进行了对比,对本文所提出的基于混合单元中耳鼓膜有限元模型的可靠性进行了验证,为中耳听骨链系统的力学分析提供了理论和模型基础。
Three dimensional geometrical data of tympanic membrane were got by using sections of undecalcified polymer-embedded temporal bone. An efficient and high precision method using mixed element of the quadrangle element and triangle element was introduced into the mesh of eardrum by HyperMesh software. The meshed model was imported into CAE software ANSYS. After the analysis of statics under different sound pressure, natural vibration and harmonic response, the results were compared with the published data and the reliability based on the mixed element eardrum model was verified. The work in this paper provides theoretic foundation for subsequent research on ossicular chain of middle ear system.
人体颞骨 / 鼓膜 / 有限元模型 / 振动特性 {{custom_keyword}} /
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