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Finite element modeling of human ear with external ear canal and middle ear cavity

机译：人耳外耳道和中耳腔的有限元建模

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Two technologies, 3-D reconstruction of human temporal bones and finite element analysis of ear biomechanics, were combined to construct a computational model for describing function of the ear for sound transmission. A set of histological sections of a human temporal bone was prepared, scanned, and digitized for imaging analysis. The aligned and treated images of the middle ear components, external ear canal and middle ear cavity were constructed with attached ligaments, muscles, and tendons. A 3-D CAD model was first created which provided accurate geometric data. Based on the solid model, the finite element (FE) model of the human ear was generated with whole middle ear and ear canal. The dynamic behavior of the FE model was very close to the actual mechanical performance of human temporal bone with 90 dB SPL at the eardrum across auditory frequencies. The model will be further used for acoustic analysis of the ear. (Supported by Whitaker Foundation and OCAST).
机译：结合了人类颞骨的3-D重建和耳朵生物力学的有限元分析这两种技术，以构建用于描述声音传输的耳朵功能的计算模型。准备，扫描并数字化一组人类颞骨的组织学切片以进行成像分析。使用附着的韧带，肌肉和肌腱构建中耳组件，外耳道和中耳腔的对齐并处理后的图像。最初创建的3-D CAD模型提供了精确的几何数据。基于实体模型，生成了整个中耳和耳道的人耳有限元（FE）模型。 FE模型的动态行为非常接近人类颞骨的实际机械性能，跨耳听觉频率在鼓膜处的声压级为90 dB。该模型将进一步用于耳朵的声学分析。 （由惠特克基金会和OCAST支持）。

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