конечно-элементный анализ

Numerical analysis of renal artery pathologies

Authors: Schuchkina O. A., Голядкина А. А., Aristambekova A. V., Potapov D. Y.

 Mathematical modeling based on experimental data (ultrasonic imaging, angiography, 3D reconstruction via spiral computed tomography) was performed. Anatomically precise model of renal artery was created. Basic principles of blood flow dynamics with stressstrain state of artery walls were studied for normal, pathologic renal arteries and arteries with hemostasis of intraorganic branches. 

Biomechanical Assessment of the Bone Ingrowth Effect During Cementless Endoprosthesis Osteointegration

Authors: Nikitsin A. V.

Finite elementmodel of porous titaniuminserts for cementless endoprosthesis was reconstructed usingX-ray tomography. The stress distribution is calculated for a model with open-cell foam and composite bone / titanium. The results explain the mechanism of the porous structure destruction and positive influence of the osteointegration effect on the strength properties. Numerical calculations are confirmed by experimental data of the porous samples during compression testing.

Finite Element Analysis of the Influence of the Orthodontic Appliance Design on the Maxillary Expansion

Authors: Bosiakov S. M.

In present paper the results of the stress-strain state finite element analysis of the humanmaxillary complex after activating orthodontic

appliance are performed. Skull and abutment teeth models are obtained on the basis of the tomographic data of the dry intact adult

skull. Orthodontic appliance designs are differ in the arrangement of rods and screws relative to the sky. The equivalent stresses and

displacements of the maxillary bones and supporting the teeth are evaluated. It is shown that the horizontal location of orthodontic

Biomechanics of Human Carotid Artery with Pathological Tortuosity

Authors: Kossovich L. Y.

Pathological tortuosity of carotid artery ranks second among the causes of cerebro-vascular insufficiency. In their previous researches

authors have described the influence of pathological tortuosity type on carotid artery behaviour. In this article we discuss the influence

of different anatomic (bending angle, bulb size) and rheological factors on haemodynamics and stress-strain state of carotid artery

with pathological tortuosity. Decreasing of the bending angle leads to blood volume reduction in brain and possible formation of