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dynamics of the moving Ring load Acting in the System“Hollow Cylinder+Surrounding Medium”with Inhomogeneous Initial Stresses

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Computers, Materials & Continua 2019年第8期61卷 503-534页

作者： Surkay DAkbarov Emin TBagirov Muslum Ozisik Yildiz Technical University Department of Mechanical EngineeringYildiz CampusBesiktasIstanbul34349Turkey Institute of Mathematics and Mechanics of National Academy of Sciences of Azerbaijan BakuAz141Azerbaijan Yildiz Technical University Department of Mathematical EngineeringDavutpasa CampusEsenlerIstanbul34220Turkey

This paper studies the influence of the inhomogeneous initial stress state in the system consisting of a hollow cylinder and surrounding elastic medium on the dynamics of the moving ring load acting in the interior of the *** is assumed that in the initial state the system is compressed by uniformly distributed normal forces acting at infinity in the radial inward direction and as a result of this compression the inhomogeneous initial stresses appear in the *** appearance of the initial stresses,the interior of the hollow cylinder is loaded by the moving ring load and so it is required to study the influence of the indicated inhomogeneous initial stresses on the dynamics of this moving *** influence is studied with utilizing the so-called threedimensional linearized theory of elastic waves in elastic bodies with initial *** solution of the corresponding mathematical problems,the discrete-analytical solution method is employed and the approximate analytical solution of these equations is *** results obtained within this method and related to the influence of the inhomogeneous initial stresses on the critical velocity of the moving load and on the response of the interface stresses to this load are presented and *** particular,it is established that the initial inhomogeneous initial stresses appearing as a result of the action of the aforementioned compressional forces cause to increase the values of the critical velocity of the moving load.

关键词： Inhomogeneous initial stresses dynamics of a moving load critical velocity hollow cylinder elastic medium ring load

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