39 citations · 128 across the 19 of their papers we have counts for
14 papers · 1 filter
Shape of a sliding capillary contact
Valentin L. Popov
We consider a classical problem of a capillary neck between a parabolic body and a plane with a small amount of liquid in between. In the state of thermodynamic equilibrium, the co…
Dynamic Stiction Mode by Friction Vector Rotation
Ken Nakano, Valentin L. Popov
We numerically study a simple sliding system: a rigid mass pulled by a spring with a strong in-plane stiffness anisotropy and a small misalignment angle. Simulations show that the…
Adhesive and non-adhesive contact of a rigid indenter and a thin elastic layer with surface tension
Valentin L. Popov
We consider an adhesive contact between a thin soft layer on a rigid substrate and a rigid cylindrical indenter ("line contact") with account of the surface tension of the layer. F…
Boundary Element Method for non-adhesive and adhesive contacts of a coated elastic half-space
Qiang Li, Roman Pohrt, Iakov A. Lyashenko +1
We present a new formulation of the Boundary Element Method (BEM) for simulating the non-adhesive and adhesive contact between an indenter of arbitrary shape and an elastic half-sp…
Indentation of concave power law profiles with arbitrary exponents
Valentin L. Popov, Markus Heß, Emanuel Willert +1
We study analytically and numerically the process of indentation of cylindrical rigid indenter with concave face in form of a power-law function. In the well-known case of a parabo…
Voltage induced friction in a contact of a finger and a touchscreen with a thin dielectric coating
Valentin L. Popov, Markus Hess
We show that application of voltage between two electrically conducting bodies separated by a thin dielectric layer is equivalent to an adhesive contact with an effective separatio…
Adhesive contact between a rigid body of arbitrary shape and a thin elastic coating
Valentin L. Popov
Application of the principle of energy balance to a rigid indenter in contact with elastic layer on a flat rigid substrate provides a very simple derivation of the detachment crite…
Detachment of adhesive normal contact between a rigid circular flat punch and a viscoelastic half-space
Emanuel Willert, Valentin L. Popov
We propose an approach to describe the propagation of a crack (or boundary of an adhesive contact) in a viscoelastic material which is only based on the consideration of the rheolo…
Elastic impact of a sphere with an elastic half-space: numerical modeling and comparison with experiment
I. A. Lyashenko, E. Willert, V. L. Popov
Numerical simulations of the dynamics of an elastic collision between a rigid sphere and an elastic half-space are carried out. We assume an Amontons-Coulomb frictional force with…
Surface profiles with zero and finite adhesion force and adhesion instabilities
Valentin L. Popov
A simple but general analysis of stability of axis-symmetric adhesive contacts is provided. Adhesion is considered in the JKR-approximation. Depending on the shape of the contactin…
Boundary element method for normal non-adhesive and adhesive contacts of power-law graded elastic materials
Qiang Li, Valentin L. Popov
Recently proposed formulation of the Boundary Element Method for adhesive contacts has been generalized for contacts of functionally graded materials with and without adhesion. Fir…
Influence of tangential displacement on the force of adhesion between a parabolic profile and plane surface
Valentin L. Popov, Iakov A. Lyashenko, Alexander E. Filippov
The force of adhesion of a rotationally symmetric indenter and an elastic half-space is analyzed analytically and numerically using an extension of the method of dimensionality red…
General procedure for solution of contact problems under dynamic normal and tangential loading based on the known solution of normal contact problem
Valentin L. Popov, Roman Pohrt, Markus Heß
In the present paper we show that the normal contact problem between two elastic bodies in the halfspace approximation can always be transformed to an equivalent problem of the ind…
Relaxation damping in oscillating contacts
M. Popov, V. L. Popov, R. Pohrt
If a contact of two purely elastic bodies with no sliding (infinite coefficient of friction) is subjected to superimposed oscillations in the normal and tangential directions, then…