Abstract
We study the adhesive contact between an rigid parabolic indenter and a half-space the elastic modulus of which is a power function of depth. A diagram is presented that shows the areas corresponding to a stable solution of the contact problem for high gradient exponents. It is shown that the adhesive contact between materials with a high gradient index is not destroyed when they are removed to any distance from each other.
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Notes
k = 0 corresponds to a homogeneous medium with elastic modulus E = E0.
For some parameter values k and ν, function β(k, ν) can be an imaginary value, but the resulting function hN(k, ν) always takes real values.
Vertical stripes on the diagram in Fig. 2 are associated with a change in the sign of the factors cos(kπ/2) and sin(βπ/2) in the experession for hN(k, ν) (4).
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This work was supported by the Deutsche Forschungsgemeinschaft, project PO 810-55-3.
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Lyashenko, I.A., Popov, V.L. Contact Properties of Gradient Materials with a High Gradient Index. Tech. Phys. 67, 28–33 (2022). https://doi.org/10.1134/S1063784222010108
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DOI: https://doi.org/10.1134/S1063784222010108