STUDY OF THE EFFECT OF FRICTION BETWEEN THE OSSICLES OF THE MIDDLE EAR

• Type: Article in International Scientific Journal
• Date: 2007

Authors

Fernanda Gentil (Author) Other; Renato M N Natal Jorge (Author) FEUP; Antonio J M Mendes Ferreira (Author) FEUP; Marco P L Lages Parente (Author) Other; Miguel Moreira (Author) Other; Eurico de Almeida (Author) Other

Journal

Title: Revista Internacional de Metodos Numericos para Calculo y Diseno en Ingenieria

Vol. 23

Pages: 177-188

ISSN: 0213-1315

Publisher: Scipedia S.L

Indexing

ISI Web of Knowledge - 12 Citations

Scientific classification

FOS: Engineering and technology > Other engineering and technologies

Other information

Authenticus ID: P-004-EJG

Abstract (EN): The human ear is a complex biomechanical system and is divided by three parts: outer, middle and inner ear. The middle ear is formed by three ossicles (malleus, incus and stapes), ligaments, muscles and tendons, that amplify the sound, sending the sound waves to the inner ear. In this work, a finite element modelling of the middle ear and ligaments was made. The connection between ossicles was achieved using contact formulation. The modelling of ligaments was based in a hyperelastic model. Studies based in the displacement field of the eardrum and footplate were made, as well as the rotation of the footplate. The stress field in the ligaments to the exterior of the ossicular chain was still analyzed. These studies were done for different friction rates, between the ossicles. and for different acoustic pressure values applied in the eardrum. We can conclude that the connection between the ossicles may be assigned by contact formulation including friction. For simulation proposes, we can assume a quasi-rigid connection between ossicles.

Language: Spanish

Type (Professor's evaluation): Scientific

No. of pages: 12