On the undamped natural frequencies and mode shapes of a finite-element model of the cat eardrum | Zendy

W. Robert J. Funnell | Zendy

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On the undamped natural frequencies and mode shapes of a finite-element model of the cat eardrum

Author(s) -

W. Robert J. Funnell

Publication year - 1983

Publication title -

the journal of the acoustical society of america

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.619

H-Index - 187

eISSN - 1520-8524

pISSN - 0001-4966

DOI - 10.1121/1.389386

Subject(s) - eardrum , finite element method , vibration , acoustics , modal , normal mode , mode (computer interface) , natural frequency , modal analysis , resolution (logic) , function (biology) , physics , mathematical analysis , mathematics , computer science , structural engineering , materials science , engineering , artificial intelligence , evolutionary biology , polymer chemistry , biology , operating system

This paper presents a three-dimensional finite-element model of the cat eardrum which includes inertial effects. The model is implemented using a hierarchical modeling scheme which permits the mesh resolution to be varied. The static behavior of the model is calculated as a function of mesh resolution in order to check the validity of an earlier model. The first six undamped natural frequencies, and the corresponding modal vibration patterns, are then calculated. They are found to lie between about 1.8 and 3.2 kHz for the standard values chosen for the model parameters. The effects on the natural frequencies of varying seven parameters of the model are described.

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