Calculation of elastic-creeping characteristics of a beam made of a layered composite material

Bobyleva, T.N.; Shamaev, A.S.

Авторы: Bobyleva T.N., Shamaev A.S.
Журнал: IOP Conference Series: Materials Science and Engineering
Том: 1030
Год издания: 2021
Издательство: -
Местоположение издательства: Krakow
Номер статьи: 012025
DOI: 10.1088/1757-899X/1030/1/012025
Аннотация: Abstract. Multilayer composite materials are often used in building structures. The directcalculation of layered structures requires large expenditures of computer time. Therefore, thehomogenization method is used. This method reduces the problem of a layered material withisotropic layers to the problem of a homogeneous transversely isotropic medium. The materialconsidered in the article is also elastic-creeping. In the equations of state of such a material,terms of the convolution type with difference creep (relaxation) kernels are added to the termsof the usual theory of elasticity. The creep (relaxation) kernels are represented by decreasingexponential functions depending on two parameters. This problem becomes a problem of thetheory of elasticity with a parameter after applying the Laplace transform in time to it. Theinverse Laplace transform can be done in a computer algebra package, for example, WolframMathematica, Wolfram-alpha. The obtained characteristics of the material are used to solve theproblem of a layered elastic-creeping beam with hinge support. Formulas are given fordetermining displacements in the case of layers parallel to the beam axis.
Добавил в систему: Шамаев Алексей Станиславович

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