Dynamic frictional contact problems involving elastic coatings

Date

2018-08-01

Author

BALCI, MEHMET NURULLAH
Dağ, Serkan

Metadata

Show full item record

This work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.

Item Usage Stats

219
views

0
downloads

This paper presents a general theory of dynamic frictional contact of elastic coatings pressed against by a rigid punch moving with a constant speed. Governing equations of elastodynamics are solved by applying Galilean and Fourier transformations. The contact problem is then reduced to a singular integral equation, which is solved numerically. Developed procedures are verified through comparisons made to the available computational and analytical results. Parametric analyses illustrate the influences of punch speed, material and geometric parameters, and friction on contact stresses. Especially at higher punch speeds, the difference between contact stress magnitudes obtained through elastostatic and elastodynamic solutions is rather significant. A formulation based on the elastodynamic theory is required to compute contact stresses generated in such problems.

Subject Keywords

Mechanical Engineering, Mechanics of Materials, Surfaces, Coatings and Films, Surfaces and Interfaces

URI

https://hdl.handle.net/11511/42251

Journal

TRIBOLOGY INTERNATIONAL

DOI

https://doi.org/10.1016/j.triboint.2018.03.033

Collections

Department of Mechanical Engineering, Article

Suggestions

OpenMETU
Core

Effect of variable friction coefficient on sheet metal drawing Darendeliler, Haluk; Yucesoy, CA (Elsevier BV, 2002-02-01) A variable friction model that relates the parameters of sheet metal drawing to the local lubrication conditions taking place during the deformation, has been integrated to a finite element program. Variable friction coefficients for the contacting surfaces are determined from the friction model, which uses the related parameters obtained at each time step of the finite element program as inputs. A number of numerical runs have been performed and the strains are compared with the experimental results for ci...
Electronic and structural properties of armchair SWCNT/TiO2(110)-(1 x 2) system Tayran, C.; ÇAKMAK, MELEK; Elliatioglu, S. (Elsevier BV, 2011-03-01) We have presented structural and electronic properties of single-walled carbon nanotubes (CNTs) with armchair chirality on the reconstructed rutile TiO2(110)-(1 x 2) surface by means of ab initio calculations using density functional theory. For the TiO2 surface reconstruction, we have adopted an added-row model which was experimentally proposed in parallel to STM patterns and theoretically agreed by first principle calculations. In this work, we have studied, as examples, two CNTs with different sizes, (3,...
Combined effects of ALS and SLS on Al2O3 reinforced composite nickel coatings Yılmaz, Olgun; Karakaya, I. (Informa UK Limited, 2020-05-03) The mechanical and tribological properties of electrochemical coatings can be enhanced by the embedded second phase particles to nickel matrix. Two different anionic surfactants sodium dodecyl sulfate and ammonium lignosulfonate were used together to adjust the wetting conditions and provide the suspension of Al2O3 particles in a nickel sulfamate electrolyte in this study. The effects of current density and amounts of the two surfactants on wear rate, coefficient of friction, and hardness were studied. It w...
Surface cracking in an orthotropic medium subjected to frictional contact Sarikaya, Duygu; Dağ, Serkan (2016-07-01) This article presents an analytical method capable of resolving the coupled problem of surface cracking in an orthotropic elastic medium subjected to frictional contact by a rigid flat punch. Reciprocal influences between the surface crack and the flat punch are accounted for by establishing a fully coupled formulation. Governing partial differential equations involving the displacement components are derived in accordance with plane theory of orthotropic elasticity. General solutions corresponding to mode ...
Differential charging in SiO2/Si system as determined by XPS Karadas, F; Ertaş, Gülay; Suzer, S (American Chemical Society (ACS), 2004-01-29) The Si2p binding and the Si-KLL kinetic energy difference between the SiO2 layer and Si substrate is shown to be influenced by application of external voltage bias to the sample holder due to the differential charging as was already reported earlier (Ulgut, B.; Suzer, S. J. Phys. Chem. B 2003, 107, 2939). The cause of this bias induced (physical)-shift is now proven to be mostly due to partial neutralization by the stray electrons within the vacuum system by (i) introducing additional stray electrons via a ...

Citation Formats

M. N. BALCI and S. Dağ, “Dynamic frictional contact problems involving elastic coatings,” TRIBOLOGY INTERNATIONAL, pp. 70–92, 2018, Accessed: 00, 2020. [Online]. Available: https://hdl.handle.net/11511/42251.