Journal of Applied Mathematics and Mechanics (about journal) Journal of Applied
Mathematics and Mechanics

Russian Academy of Sciences
 Founded
in January 1936
(Translated from 1958)
Issued 6 times a year
ISSN 0021-8928
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IssuesArchive of Issues2010-6pp.673-678

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Total articles in the database: 10482
In Russian (ΟΜΜ): 9683
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Ye.M. Kolosova and M.I. Chebakov, "The contact problem for a two-layer spherical base," J. Appl. Math. Mech. 74 (6), 673-678 (2010)
Year 2010 Volume 74 Issue 6 Pages 673-678
Title The contact problem for a two-layer spherical base
Author(s) Ye.M. Kolosova (Rostov-on-Don, Russia)
M.I. Chebakov (Rostov-on-Don, Russia, chebakov@math.sfedu.ru)
Abstract Analytical methods for solving problems of the interaction of punches with two-layer bases are described using in the example of the axisymmetric contact problem of the theory of elasticity of the interaction of an absolutely rigid sphere (a punch) with the inner surface of a two-layer spherical base. It is assumed that the outer surface of the spherical base is fixed, that the layers have different elastic constants and are rigidly joined to one anther, and that there are no friction forces in the contact area. Several properties of the integral equation of this problem are investigated, and schemes for solving them using the asymptotic method and the direct collocation method are devised. The asymptotic method can be used to investigate the problem for relatively small layer thicknesses, and the proposed algorithm for solving the problem by the collocation method is applicable for practically any values of the initial parameters. A calculation of the contact stress distribution, the parameters of the contact area, and the relation between the displacement of the punch and the force acting on it is given. The results obtained by these methods are compared, and a comparison with results obtained using Hertz, method is made for the case in which the relative thickness of the layers is large.
Received 12 April 2010
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