Modeling and determination of the mechanical properties of the interfacial layer of reinforced composite materials

Authors

  • Soloviev A.N. Don State Technical University, Rostov-on-Don, Russian Federation
  • Ziborov E.N. Don State Technical University, Rostov-on-Don, Russian Federation

UDC

654+681.3

EDN

VVXYOB

Abstract

The presence of the interfacial layer between the reinforcing fibers and the matrix is one of the structural features of reinforced composite materials. The properties of this layer are unknown and may vary during operation when an adhesion failure between the reinforcing fiber and the matrix takes place. The work is dedicated to modeling of the interfacial layer in reinforced composite materials and determination of its parameters (mechanical properties and size) using analytic solutions for a laminated cylinder with subsequent study of the possibility of using the results obtained for a representative volume of the composite in the form of a prismatic block for which a full-scale experiment is possible. The interphase layer is modeled by isotropic elastic material with unknown properties; the problem of defining its properties is formulated as an inverse coefficient problem of elasticity theory. The force applied to end of cylinder and the radial displacement of the lateral surface of the cylinder is the additional information for solving the inverse problem if given its end displacement. The system of equations is obtained, from which the Young's modulus and Poisson's ratio of interfacial layer with a given thickness or its thickness, and one of the parameters of the elastic properties are defined. Prismatic representative volume of reinforced composite with interfacial layer is modeled using the finite element method in the package ANSYS. Characteristics of stress deformed state of cylindrical and prismatic representative volumes are compared at the wide range of the elastic properties’ changes of the materials of its components. The possibility of determining the parameters of the interfacial layer in a prismatic sample using the method developed for the cylindrical sample using additional information about its deformation is showed, as a result of this comparison. These numerical experiments, including the “noisy” data demonstrate effectiveness of the developed method.

Keywords:

interfacial layer, composite cylinder, modeling composite

Authors info

  • Arkadiy N. Soloviev

    д-р физ.-мат. наук, заведующий кафедрой теоретической и прикладной механики Донского государственного технического университета, профессор кафедры математического моделирования Южного федерального университета

  • Evgeniy N. Ziborov

    аспирант кафедры теоретической и прикладной механики Донского государственного технического университета

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Issue

Vol.  (2016) No. 1

Pages

79-86

Section

Article

Dates

Submitted

February 12, 2016

Accepted

February 26, 2016

Published

March 22, 2016

How to Cite

[1]
Soloviev, A.N., Ziborov, E.N., Modeling and determination of the mechanical properties of the interfacial layer of reinforced composite materials. Ecological Bulletin of Research Centers of the Black Sea Economic Cooperation, 2016, № 1, pp. 79–86.

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Copyright (c) 2016 Соловьёв А.Н., Зиборов Е.Н.

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