Study on Mechanics Behavior of Human Ear Sound Transmission Based on Nonlinear Constitutive Relation

Abstract:

Based on the normal CT scan image of human right ear, numerical model has been established combined with self-compiling program. The nonlinear constitutive relation of real middle ear material has been included, and sound - solid and liquid - solid coupling method have been adopted to simulate the sound transmission process from external auditory canal to tympanic membrane, auditory ossicle chain, and eventually to the inner ear. Frequency response and sound transmission behavior has been obtained, and numerical calculation results have been verified by comparing the calculation results with the experimental data. The amplitude, vibration velocity, and stress distribution of middle ear have been analyzed by the model, and the most easy damage part of the tympanic membrane and ossicular chains owing to stress concentration have been obtained in sound transmission of middle ear, which exposes the inner relationship between mechanical behavior of middle ear and pathological changes.

• Periodical: Applied Mechanics and Materials (Volume 432)
• Pages: 381-385
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.432.381
• Online since: September 2013
• Authors: Wen Juan Yao, Bo Te Luo
• Keywords: Dynamics Behavior, Ear Structure, Nonlinear Constitutive Relation, Numerical Model

References

[1] Wada H., Metoki T., Kobayashi T., Analysis of dynamic behavior of human middle ear using a finite-dement method [J]. J. Acoust Soc Am, 1992, 92(6): 3157-3168.

DOI: 10.1121/1.404211

[2] Beer H.J., Bomitz M., Drescher J., et al., Finite element modelling of the human eardrum and application [A]. Proceedings of the Intenational Workshop on Middle Ear Mechanics, Dresden, Sept. 19-22, 1996 [C]. Dresden: University of Technology, 1997: 40-47.

[3] Gan R.Z., Feng B., Sun Q., Three-Dimensional Finite Element Modeling of Human Ear for Sound Transmission [J]. Annals of Biomedical Engineering, 2004, 32(6): 847-859.

DOI: 10.1023/b:abme.0000030260.22737.53

[4] Gan R.Z., Sun Q., Feng B., Wood M.W., Acoustic-structural coupled finite element analysis for sound transmission in human ear-Pressure distributions [J]. Medical Engineering & Phys-ics, 2006, 28: 395-404.

DOI: 10.1016/j.medengphy.2005.07.018

[5] Wenjuan Yao，Xin-Sheng Huang, Li-Jie Fu, Transmitting Vibration of Artificial Ossicle, International Journal of Nonlinear Sciences and Numerical Simulation，2008，9(2): 131-139.

[6] Wenjuan Yao, Bing Li, Cuiping Guo, Xinsheng Huang. Numerical simulation and study about partial ossicular replacement prostheses with several various materials on hearing restoration [J]. Application of Chemical Engineering. 2011, 238 (3): 2899-2904.

DOI: 10.4028/www.scientific.net/amr.236-238.2899

[7] Cheng T., Dai C., Gan R.Z., Viscoelastic Properties of Human Tympanic Membrane [J]. Annals of Biomedical Engineering, 2007, 35(2): 305-314.

DOI: 10.1007/s10439-006-9227-0

[8] Lu H., Luo H., Dai C., Gan R.Z., The young's modulus of human eardrum at high strain rates [A]. Society for Experimental Mechanics-11th International Congress and Exhibition on Experimental and Applied Mechanics, 2008, 2(1): 896-899.

[9] Cheng T., Gan R.Z., Mechanical properties of anterior malleolar ligament from experimental measurement and material modeling analysis [J]. Biomech Model Mechanobiol, 2008, 7(1): 387-394.

DOI: 10.1007/s10237-007-0094-x

[10] Daphalapurkar N.P., Dai C., Gan R.Z., Lu H., Characterization of the linearly viscoelastic behavior of human tympanic membrane by nanoindentation [J]. Journal of The Mechanical Behavior of Biomedical Materials, 2009, (2): 82-92.

DOI: 10.1016/j.jmbbm.2008.05.008

[11] Gan R.Z., Reeves B.P., Wang X., Modeling of Sound Transmission from Ear Canal to Coch-lea [J]. Annals of Biomedical Engineering, 2007, 35(12): 2180-2195.

DOI: 10.1007/s10439-007-9366-y

[12] Gan R.Z., Wang X., Multifield coupled finite element analysis for sound transmission in otitis media with effusion [J], J. Acoust. Soc. Am., 2007, 122 (6): 3527-3538.

DOI: 10.1121/1.2793699

[13] Wang X., Cheng T., Gan R.Z., Finite-element analysis of middle-ear pressure effects on static and dynamic behavior of human ear [J]. J. Acoust. Soc. Am., 2007, 122(2): 906-917.

DOI: 10.1121/1.2749417