Finite element modelling of nearly incompressible materials and volumetric locking: a case study

Pierre-Yves Rohan (1) , Claudio Lobos (2) , Mohammad Ali Nazari (3) , Pascal Perrier (3) , Yohan Payan (1)

1 TIMC-IMAG-GMCAO - Gestes Medico-chirurgicaux Assistés par Ordinateur
2 TIMC-IMAG - Techniques de l'Ingénierie Médicale et de la Complexité - Informatique, Mathématiques et Applications, Grenoble - UMR 5525
3 GIPSA-MAGIC - GIPSA - Machines parlantes, Gestes oro-faciaux, Interaction Face-à-face, Communication augmentée

The purpose of this paper is to illustrate the influence of the choice of the finite element technology on the occurrence of locking and hourglass instabilities. We chose to focus on the case study of the activation of the posterior genio-glossus (GGp) that is a lingual muscle located at the root of the tongue and inserts in the front to the mandible. The activation of this muscle compresses the tongue in the lower part and generates a forward and upward movement of the tongue body, because of the incompressibility of tongue tissues (for example during the production of the phonemes /i/ or /s/).

Mots clés: Finite Element Modeling

Domaines: Biomécanique [physics.med-ph]; Biomécanique [physics.med-ph]; Ingénierie biomédicale

Pierre-Yves Rohan, Claudio Lobos, Mohammad Ali Nazari, Pascal Perrier, Yohan Payan. Finite element modelling of nearly incompressible materials and volumetric locking: a case study. Computer Methods in Biomechanics and Biomedical Engineering, 2014, 17 (Issue sup1), pp.192-193. ⟨10.1080/10255842.2014.931682⟩. ⟨hal-01061380⟩