Real-time simulations of human tongue movements with a reduced order model of a non-linear dynamic biomechanical model

M Calka,P Perrier,J Ohayon,C Grivot Boichon,M Rochette,Y Payan

doi:10.1080/10255842.2020.1812158

Abstract

A 3D biomechanical model of the human tongue has been developed to study speech production (Hermant et al. 2017) and to help clinicians to predict the functional consequences of tongue cancer surge...

Highlights

A 3D biomechanical model of the human tongue has been developed to study speech production (Hermant et al, 2017) and to help clinicians to predict the functional consequences of tongue cancer surgery (Buchaillard et al, 2007)
This paper proposes to evaluate the Model Order Reduction (MOR) technique developed by ANSYS® called Dynamic ROM Builder (DRB), which is accessible in the ANSYS Twin
We focused on tongue movements resulting from the activations of two muscles, the Styloglossus (SG) and the Genioglossus Posterior (GG-P), which have been shown to be important for speech production and swallowing

Summary

Introduction

A 3D biomechanical model of the human tongue has been developed to study speech production (Hermant et al, 2017) and to help clinicians to predict the functional consequences of tongue cancer surgery (Buchaillard et al, 2007). Model requires a transient analysis in order to generate tongue trajectories over time in response to various patterns of muscles activations. It requires a large deformation hyper-elastic framework to account for the complex non-linear geometrical and mechanical properties of tongue tissues. For all these reasons, any simulation of a one-second movement requires many hours of computation with a standard computer. Contrary to other recent MOR techniques that propose real-time computations for quasi-static analysis (Lauzeral et al 2019), the DRB is adapted to a transient analysis and should simulate, in real-time the non-linear dynamical behavior of the tongue model

Methods

Results

Conclusion