The influence of the mechanical behaviour of the middle ear ligaments: a finite element analysis

• Tipo: Artigo em Revista Científica Internacional
• Data: 2011

Autores

Fernanda Gentil (Autor) Outra; Marco Parente (Autor) FEUP; Pedro Martins (Autor) Outra; Carolina Garbe (Autor) Outra; Renato Natal Jorge (Autor) FEUP; António Ferreira (Autor) FEUP; João Manuel R. S. Tavares (Autor) FEUP

Revista

Título: Proceedings of the Institution of Mechanical Engineers, Part H: Journal of Engineering in Medicine

Vol. 225 Nº 1

Páginas: 68-76

ISSN: 0954-4119

Editora: SAGE

Indexação

ISI Web of Knowledge - 43 Citações

Scopus - 47 Citações

COMPENDEX

INSPEC

Classificação Científica

FOS: Ciências da engenharia e tecnologias > Biotecnologia ambiental

CORDIS: Ciências Tecnológicas

Outras Informações

ID Authenticus: P-002-ZCT

DOI: 10.1243/09544119jeim783

Abstract (EN): The interest in computer modelling of biomechanical systems, mainly by using the finite element method (FEM), has been increasing, in particular for analysis of the mechanical behaviour of the human ear. In this work, a finite element model of the middle ear was developed to study the dynamic structural response to harmonic vibrations for distinct sound pressure levels applied on the eardrum. The model includes different ligaments and muscle tendons with elastic and hyperelastic behaviour for these supportive structures. Additionally, the nonlinear behaviour of the ligaments and muscle tendons was investigated, as they are the connection between ossicles by contact formulation. Harmonic responses of the umbo and stapes footplate displacements, between 100 Hz and 10 kHz, were obtained and compared with previously published work. The stress state of ligaments (superior, lateral, and anterior of malleus and superior and posterior of incus) was analysed, with the focus on balance of the supportive structures of the middle ear, as ligaments make the link between the ossicular chain and the walls of the tympanic cavity. The results obtained in this work highlight the importance of using hyperelastic models to simulate the mechanical behaviour for the ligaments and tendons.

Idioma: Inglês

Tipo (Avaliação Docente): Científica

Nº de páginas: 9