Mechanics

Stress-strain State of an Elliptical Cylinder with an Ellipsoidal Bottoms of Dissimilar Materials Based FEM

Authors: Klochkov Y. V., Nikolaev A. P., Kiseleva T. A.

The algorithm of calculating the construction in the form of an elliptical cylinder with ellipsoidal bottom of different materials based

on the finite element method with the use of scalar and vector fields interpolating movements is described. As part of the sampling

using rectangular curved finite elements with eighteen degrees of freedom in the node. Calculations of a circular cylinder with an

articulated ellipsoid of rotation the verification of the algorithm and shows its effectiveness.

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

The Problem of a Hydroelasticity for a Tube Ring-type a Profile with Elastic, Geometrically Irregular Outer Shell at Pressure Influence

Authors: Kondratov D. V., Popov V. S., Plaksina I. V., Kondratova Y. N.

The mechanical model presented in the form of a tube of ring section, formed by two surfaces of coaxial cylindrical shells cooperating

with viscous incompressible liquid is considered. The mathematical model of this system consisting of the differential equations

in private derivatives of describing dynamics of viscous incompressible liquid and an elastic ridge shell together with boundary

conditions is constructed.