Problems of Tribology = Проблеми трибології - 2019 рік

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https://elar.khmnu.edu.ua/handle/123456789/7827

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Перегляд Problems of Tribology = Проблеми трибології - 2019 рік за Ключові слова "initial (residual) stresses"

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  • Ескіз
    Документ
    A flat contact problem the interaction two prestressed stripes with an infinite stringer
    (Khmelnytskyi National University, 2019) Dikhtyaruk, N.N.; Poplavskaya, E.A.
    The article is devoted to the research of problems of contact interaction of infinite elastic stringer with two identical clamped along one edge of pre-stressed strips. In general, the research was carried out for the theory of great initial and different variants of the theory of small initial deformations within the framework of linearized theory of elasticity with the elastic potential having arbitrary structure. The integral integer-differential equations are obtained using the integral Fourier transform. Their solution is represented in the form of quasiregular infinite systems of algebraic equations. In the article alsaw was investigated the influence of the initial (residual) stresses in strips on the law of distribution of contact stresses along the line of contact with an infinite stringer. The system is solved in a closed forms using transformation of Fourier. Expressions of stresses are represented by Fourier integrals with a simple enough structure. Influence of initial stress on the distribution of contact stresses is study and discovered the mechanical effects under the influence of concentrated loads.
  • Ескіз
    Документ
    Contact interaction of elastic strips with initial stresses with a infinite and finite stringers
    (Хмельницький національний університет, 2019) Dikhtyaruk, N.N.; Poplavskaya, E.A.; Kurinyenko, O.V.; Діхтярук, М.М.; Поплавська, О.А.; Курінєнко, О.В.
    The present article the problems of the contact interaction of infinite and finite elastic stringer with a prestressed elastic strip. The study is performed in the framework of the linearezed theory of elasticity in common form for the theory of large (finite) initial deformations and two variants of the theory of small initial deformations with elastic potential of arbitrary structure. Based on the assume that the stringers load at the same time the vertical and horizontal forces, fair model of bending beams in combination with horizontall elongation. This problem is mathematically formulated as a system of integrodifferential equations of a relatively unknown contact stresses. The system is solved in a closed forms using transformation of Fourier. Expressions of stresses are represented by Fourier integrals with a simple enough structure. Influence of initial stress on the distribution of contact stresses is study and discovered the mechanical effects under the influence of concentrated loads.