Analysis of the Human Middle Ear Dynamics Through Multibody Modeling
| Autor: | Diego Calero, Stephan Paul, Lucas C. Lobato, Julio A. Cordioli |
|---|---|
| Rok vydání: | 2020 |
| Předmět: |
Incudostapedial joint
Frequency response Incudomalleolar joint Tympanic Membrane Ossicles Acoustics Finite Element Analysis Biomedical Engineering Ear Middle Multibody system 01 natural sciences Finite element method Tendons 03 medical and health sciences 0302 clinical medicine medicine.anatomical_structure Physiology (medical) 0103 physical sciences medicine Middle ear 010301 acoustics 030217 neurology & neurosurgery Mathematics Stapes |
| Zdroj: | Journal of Biomechanical Engineering. 142 |
| ISSN: | 1528-8951 0148-0731 |
| DOI: | 10.1115/1.4046689 |
| Popis: | The dynamics of the human middle ear (ME) has been studied in the past using several computational and experimental approaches in order to observe the effect on hearing of different conditions, such as conductive disease, corrective surgery, or implantation of a middle ear prosthesis. Multibody (MB) models combine the analysis of flexible structures with rigid body dynamics, involving fewer degrees-of-freedom (DOF) than finite element (FE) models, but a more detailed description than traditional 1D lumped parameter (LP) models. This study describes the reduction of a reference FE model of the human middle ear to a MB model and compares the results obtained considering different levels of model simplification. All models are compared by means of the frequency response of the stapes velocity versus sound pressure at the tympanic membrane (TM), as well as the system natural frequencies and mode shapes. It can be seen that the flexibility of the ossicles has a limited impact on the system frequency response function (FRF) and modes, and the stiffness of the tendons and ligaments only plays a role when above certain levels. On the other hand, the restriction of the stapes footplate movement to a piston-like behavior can considerably affect the vibrational modes, while constraints to the incudomalleolar joint (IMJ) and incudostapedial joint (ISJ) can have a strong impact on the system FRF. |
| Databáze: | OpenAIRE |
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