Effect of Friction in Sliding Contact of a Sphere Over a Viscoelastic Half-Space

Effect of Surface Layers in Sliding Contact of Viscoelastic Solids (3-D Model of Material)

“…It should be noted that the curve which corresponds to the case of the half-space, has specific bends. Similar results were previously obtained in Koumi et al (2015), Goryacheva et al (2015Goryacheva et al ( , 2016. For a relatively thin layer the shape of the curve is similar to the results obtained for the 1-D model of viscoelastic layer (Lyubicheva, 2008).…”

“…It is the deformation component of the friction force (or sliding resistance). Problems under consideration are without tangential stresses at the surface, and the friction coefficient is defined as follows (Goryacheva et al, 2016): Together with an increase of sliding velocity (Figure 2B), the size of the contact area decreases, and the maximum value of the contact pressure increases; and the pressure distribution becomes almost symmetrical. Similar phenomenon was observed earlier for 1-D models of viscoelastic layer bonded with a rigid half-space (Lyubicheva, 2008), and also for viscoelastic halfspace (Aleksandrov et al, 2010;Goryacheva et al, 2015Goryacheva et al, , 2016.…”

“…3-D quasi-static contact problems for indenters sliding over a viscoelastic half-space were developed in Aleksandrov et al (2010), Goryacheva et al (2015Goryacheva et al ( , 2016, Koumi et al (2015), Stepanov and Torskaya (2016). Contact problems considering the material model specified by a spectrum of relaxation times are considered in Aleksandrov et al (2010).…”

“…Contact problems considering the material model specified by a spectrum of relaxation times are considered in Aleksandrov et al (2010). The effect of the adhesive friction component on energy dissipation was analyzed in Goryacheva et al (2015Goryacheva et al ( , 2016. A viscoelastic material with an inclusion was considered in Koumi et al (2015).…”

Modeling Sliding Friction of a Multiscale Wavy Surface over a Viscoelastic Foundation Taking into Account Adhesion

“…Friction of viscoelastic materials has not only a hysteretic, but also an adhesive component [1]. In modeling the sliding of a smooth indenter over a viscoelastic solid, this component can be taken into account by a coefficient of friction in the Coulomb law of friction relating tangential to normal contact stresses [16]. In this case, the total friction force includes both hysteretic and adhesive contributions, but the value of the adhesive coefficient of friction is an input parameter of the model and should be determined experimentally or from other considerations.…”