Vocal tract acoustic modelling using FEM with specific element

The study was supported by the Czech Science Foundation, Grant No. 19-04477S: “Modelling and measurements of fluid-structure-acoustic interactions in biomechanics of human voice production.

Using the proper orthogonal decomposition analysis for detecting pathologic vocal fold vibration

A three-dimensional (3D) finite element (FE) fully parametric model of the human larynx based on computer tomography (CT) measurements was developed and specially adapted for numerical simulation of vocal folds vibrations with collisions. The complex model consists of the vocal folds, arytenoids, thyroid and cricoid cartilages. The vocal fold tissue is modeled as a four layered material where part of the cover was substituted by a liquid layer modelling the superficial layer of lamina propria. The proper orthogonal decomposition (POD) analysis of the excited modes of vibration was used for detecting changes in vibration properties of the vocal folds caused by pathologic changes of vocal fold structure (vocal nodule)

Computationally Efficient Model of the Human Vocal Fold

One mass model of the vocal folds with three degrees of freedom in 2D space was created and used to simulate the movement of the vocal folds. Vocal folds are modeled as a solid mass stored flexibly in 2D. The model is excited by aerodynamic forces. The flow is solved by analytical model incompressible and non-viscous fluid with constant flow. In case of close of the glottis are aerodynamic forces replaced by Hertz model of the contact forces. Movement equations are solved by numerical method. The model allows to solve the movement of the vocal folds in the time domain, pressure field acting on the vocal folds or contact pressures

Vocal tract acoustic modelling using FEM with specific element

The study was supported by the Czech Science Foundation, Grant No. 19-04477S: “Modelling and measurements of fluid-structure-acoustic interactions in biomechanics of human voice production.

Modelling of swelling and deformations of homogeneous hydrogel

Grant agency of Czech Republic by project No 17-08531S Computationally designed hydrogel cell supports. Additional support provider is Student Grant Competition by project No SGS19/157/OHK2/3T/12 Modelling, control and design of mechanical system 201

Modeling of the mechanical behavior of polymer hydrogels

The research is supported by Grant Agency of the Czech Republic by project No 17-08531S Computationally designed hydrogel cell supports.The paper describes the possible procedure of FEM calculation of hydrogel materials. The basis of the calculation is to perform a calculation with a common material model. Only after the application of boundary conditions is the material model incrementally changed to the desired. This procedure reduces the risk of non-convergence. In addition, this allows you to choose a solution to which the model converges, if they exist