Vílezslav Stembera

Self-Excited Oscillations of Elastic Tubes

Induced by Fluid-Structure Interaction

• Broschiertes Buch

Produktbeschreibung

The phenomenon of self-excited oscillations of elastic tubes induced by fluid-structure interaction is studied. The study is mainly motivated by vessel collapse and self-excited oscillations observed in the human body. The mixed formulation of the finite element is used for the simulation of the structure. The structure model is three-dimensional and uses a hyperelastic material description. Four material models are implemented: the Neo-Hookean model, the Mooney-Rivlin model, the isotropic Gent model and the anisotropic Gent model. The fluid is considered as a Newtonian liquid, modeled by the artificial viscosity approach. The fluid solver uses a spatially one-dimensional. Both the structure and fluid solver are validated by seven benchmarks with an analytical solution. The strong coupling of the structure and fluid solver is used. The steady-state dependence of the tube cross-section with respect to the transmural pressure is investigated for different collapse modes. The unsteady behaviour is studied and self-excited low-frequency oscillations are found. A comparison with experimental data, obtained by other authors on the Starling resistor set-up line, is carried out.

Produktdetails

• Verlag: LAP Lambert Academic Publishing
• Seitenzahl: 168
• Erscheinungstermin: 22. Januar 2013
• Englisch
• Abmessung: 220mm x 150mm x 11mm
• Gewicht: 268g
• ISBN-13: 9783659265747
• ISBN-10: 3659265748
• Artikelnr.: 37063151

Autorenporträt

Graduated in Mathematical and Computer Modeling from the Charles University in Prague in 2002, and obtained Ph.D. there in 2012. He currently works as FEM analyst and cooperates with the Czech Technical University in Prague. His field of interest is numerical mathematics.