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Mechanics of Composite Materials
Published in: Mechanics of Composite Materials 4/2018

13-09-2018

Modeling the Process of Unsteady One-Dimensional Diffusion of an Aggressive Medium

Authors: A. Lokoshchenko, A. Dalinkevich, L. Fomin

Published in: Mechanics of Composite Materials | Issue 4/2018

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Abstract

The unsteady one-dimensional diffusion of an aggressive medium across the thickness of a long cylindrical shell is investigated. Data on the concentration of the medium on the outer surface of the shell and the diffusion coefficient are given in the form of piecewise-constant functions of time. The distribution of concentration of the medium across the thickness of the shell and the time-dependent integrally average concentration for shells 1 and 0.5 cm thick are obtained. The concentration of the aggressive medium in the shell is calculated up to a period of five years. The results obtained are compared with calculations for a continuous concentration of the medium at the boundary and the diffusion coefficient as functions of time. Based on the Rabotnov kinetic theory of creep and long-term strength, a way to predict the long-term properties of structural elements in a aggressive medium is shown.
previous article Electrical and Mechanical Properties of Melt-Processed Polyethylene Terephthalate/Multi-Wall Carbon Nanotube Nanocomposites for Thermoelectric Materials
next article Analysis of Properties of Ramp Stress Relaxation Curves Produced by the Rabotnov Nonlinear Hereditary Theory

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Metadata
Title
Modeling the Process of Unsteady One-Dimensional Diffusion of an Aggressive Medium
Authors
A. Lokoshchenko
A. Dalinkevich
L. Fomin
Publication date
13-09-2018
Publisher
Springer US
Published in
Mechanics of Composite Materials / Issue 4/2018
Print ISSN: 0191-5665
Electronic ISSN: 1573-8922
DOI
https://doi.org/10.1007/s11029-018-9756-2

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