scholarly journals Adhesive contact between a rigid spherical indenter and an elastic multi-layer coated substrate

2016 ◽  
Vol 87 ◽  
pp. 1-10 ◽  
Author(s):  
Gheorghe Stan ◽  
George G. Adams
Keyword(s):  
Adhesive Contact ◽  
Spherical Indenter ◽  
Coated Substrate

Adhesive contact between a rippled elastic surface and a rigid spherical indenter: from partial to full contact

Soft Matter ◽  
2011 ◽  
Vol 7 (22) ◽  
pp. 10728 ◽  
Author(s):  
Congrui Jin ◽  
Krishnacharya Khare ◽  
Shilpi Vajpayee ◽  
Shu Yang ◽  
Anand Jagota ◽  
...  
Keyword(s):  
Adhesive Contact ◽  
Spherical Indenter ◽  
Elastic Surface ◽  
Full Contact

scholarly journals Влияние продолжительности контакта и глубины индентирования на адгезионную прочность: эксперимент и численное моделирование

2020 ◽  
Vol 90 (10) ◽  
pp. 1769
Author(s):  
Я.А. Ляшенко ◽  
В.Л. Попов
Keyword(s):  
Numerical Simulation ◽  
Satisfactory Agreement ◽  
Adhesive Strength ◽  
Glass Substrate ◽  
Indentation Depth ◽  
Adhesive Contact ◽  
Spherical Indenter ◽  
Experimental Results ◽  
Fixed Load ◽  
Soft Rubber

The adhesive contact between a steel spherical indenter and a layer of transparent soft rubber fixed on a glass substrate is experimentally investigated. Obtained experimental results are compared with theory and numerical simulation, which demonstrates satisfactory agreement between these three approaches. The influence of the indenter time in the contact and the indentation depth on the value of the adhesive strength of the contact is studied. The features of experiments conducted under conditions of controlled displacement (fixed grips) and controlled force (fixed load) are discussed.

Mechanical modeling and characteristic study for the adhesive contact of elastic layered media

2017 ◽  
Vol 50 (47) ◽  
pp. 475601 ◽  
Author(s):  
Yuyan Zhang ◽  
Xiaoli Wang ◽  
Qiaoan Tu ◽  
Jianjun Sun ◽  
Chenbo Ma
Keyword(s):  
Layered Media ◽  
Adhesive Contact ◽  
Mechanical Modeling

A semianalytical and finite-element solution to the unbonded contact between a frictionless layer and an FGM-coated half-plane

2017 ◽  
Vol 24 (2) ◽  
pp. 448-464 ◽  
Author(s):  
Jie Yan ◽  
Changwen Mi ◽  
Zhixin Liu
Keyword(s):  
Integral Equation ◽  
Finite Element ◽  
Singular Integral Equation ◽  
Contact Problem ◽  
Singular Integral ◽  
Material Properties ◽  
Elastic Layer ◽  
Coated Substrate ◽  
Receding Contact ◽  
Contact Size

In this work, we examine the receding contact between a homogeneous elastic layer and a half-plane substrate reinforced by a functionally graded coating. The material properties of the coating are allowed to vary exponentially along its thickness. A distributed traction load applied over a finite segment of the layer surface presses the layer and the coated substrate against each other. It is further assumed that the receding contact between the layer and the coated substrate is frictionless. In the absence of body forces, Fourier integral transforms are used to convert the governing equations and boundary conditions of the plane receding contact problem into a singular integral equation with the contact pressure and contact size as unknowns. Gauss–Chebyshev quadrature is subsequently employed to discretize both the singular integral equation and the force equilibrium condition at the contact interface. An iterative algorithm based on the method of steepest descent has been proposed to numerically solve the system of algebraic equations, which is linear for the contact pressure but nonlinear for the contact size. Extensive case studies are performed with respect to the coating inhomogeneity parameter, geometric parameters, material properties, and the extent of the indentation load. As a result of the indentation, the elastic layer remains in contact with the coated substrate over only a finite interval. Exterior to this region, the layer and the coated substrate lose contact. Nonetheless, the receding contact size is always larger than that of the indentation traction. To validate the theoretical solution, we have also developed a finite-element model to solve the same receding contact problem. Numerical results of finite-element modeling and theoretical development are compared in detail for a number of parametric studies and are found to agree very well with each other.

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