Determination of elastic characteristics for a package of monolayers thin-walled plates from composite fibrous materials

Authors

  • Mykola Kryshchuk Igor Sikorsky Kyiv Polytechnic Institute, Ukraine https://orcid.org/0000-0002-0662-9147
  • Egor Ovcharenko Igor Sikorsky Kyiv Polytechnic Institute, Ukraine
  • Hanna Us Igor Sikorsky Kyiv Polytechnic Institute, Ukraine

DOI:

https://doi.org/10.20535/2521-1943.2023.7.2.287711

Keywords:

composite materials, carbon tape, carbon fabric, multilayer thin-walled plates, elastic modulus, Poisson's ratios, plane stress state, Hooke's law, computational models

Abstract

An analytical method for calculating the equivalent elastic characteristics of anisotropic multilayer plates made of composite fibrous materials is laid out. The main assumptions taken into consideration when calculating elastic moduli and Pousson's coefficients are that fibers are elastic materials with orthotropic mechanical characteristics that deform together when multilayer plates are loaded. Analytical methods for calculating effective modulus of elasticity most common in practical applications of applied mechanics are laid out in the list of cited publications. These include the rules of the mixture, the model proposed by Hill and Khashin, the model of Kilchinsky, the methods of Vanin and L.P. Khoroshun. Numerical methods for determining the elastic mechanical properties of reinforced unidirectional and layered composite materials are based on information technologies of finite-element modeling of representative volumes of composite materials and solving a number of boundary value problems for them. For the constructions of thin-walled plates with composite fibrous materials, traditional calculation schemes are used, for which the plane stress state is typical. The stress-strain relationship for a monolayer of plates loaded at an arbitrary angle is presented in the form of Hooke's law for aniotropic materials. Deformations of a package of monolayers with composite fibrous materials in a plane elastic-deformed state are determined, as for a monolayer, by four independent elastic constants. With the use of a universal calculation model based on the equations of applied mechanics, the results of the calculations of elastic moduli and Poisson's coefficients were obtained for a package of monolayers of thin-walled plates with composite fibrous materials made of carbon fiber and carbon fiber. Research results are presented in an analytical and graphic form. The influence of the construction structure of composite fibrous materials of thin-walled plates on its mechanical properties and their dependence on the angle of the force load vector is presented. The research results can be used to determine the rational mechanical properties of multilayer composite plates, taking into account their structural and technological purpose in various industries.

References

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Published

2023-09-19

How to Cite

[1]
M. Kryshchuk, E. Ovcharenko, and H. Us, “Determination of elastic characteristics for a package of monolayers thin-walled plates from composite fibrous materials”, Mech. Adv. Technol., vol. 7, no. 2 (98), pp. 155–159, Sep. 2023.

Issue

Vol. 7 No. 2 (98) (2023)

Section

Mechanics

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Copyright (c) 2023 Микола Крищук, Єгор Овчаренко, Ганна Ус

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