Dynamics of coaxial cylindrical shells in an elastic inertial medium
Journal Title: Технічна механіка, Техническая механика, Technical Mechanics - Year 2017, Vol 3, Issue 3
Abstract
This paper is concerned with the study of the dynamic stress and strain field in a linearly elastic inertial homogeneous medium with two coaxial cavities reinforced with thin elastic shells under the action of dynamic surface loads. Two cases are considered: two coaxial shells in an infinite medium; two coaxial shells in a medium with a free surface, both shells lying at the same depth. The aim of this paper is to study the mutual effect of the shells in the first case and the mutual effect of the shells and the free surface in the second case. In both cases, it is assumed that the dynamic load acts on the inner surface of one of the shells and depends on time as the unit step function. The problem is solved by the finite-element method. In the first case, the scientific novelty lies in accounting for the mutual effect of two coaxial shells. In the second case, the scientific novelty lies in accounting for the effect of the free surface on the dynamic stresses and strains in the mechanical system under consid-eration. The results of this study are illustrated by graphs and analyzed.
Authors and Affiliations
V. Pozhuev, A. Fasoliak
Keywords
Related Articles
- EP ID EP344961
- DOI -
- Views 99
- Downloads 0
Explosion of launch vehicle during the flight: environmental aspects of aftereffects and their evaluation
Environmental aspects of the aftereffects of a launch vehicle explosion during the flight are examined. A methodic approach to predictable evaluations involving the characteristics of the dropping cloud in an explosion,...
High-speed straining sandwich elements under contact impacts
The work purpose is to analyze high-speed straining the sandwich elements at the elastoplastic stage under contact impacts. The element consisting of two thin layers from the titanium alloy and the inner ceramic layer is...
Analysis of calculated disturbances for studying horizontal dynamics of freight car
The study purpose is to choose the components of the calculated disturbances for predicting the dynamic qualities of the freight cars in a horizontal plane. The studies are carried out using mathematical modeling the car...
Mathematical model of end body dynamics in motion of space tether system stabilized by rotation
Examining the effects of the end body dynamics on the system motion holds a significance in understand-ing the dynamics of the space tether systems (STS) stabilized by rotation. The study purpose is to build a mathe-mati...
Dynamics of coaxial cylindrical shells in an elastic inertial medium
This paper is concerned with the study of the dynamic stress and strain field in a linearly elastic inertial homogeneous medium with two coaxial cavities reinforced with thin elastic shells under the action of dynamic su...