Stability analysis of rough surfaces in adhesive normal contact

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Composite sandwich panels composed of a balsa core and glass fiber-reinforced polymer (GFRP) face sheets may offer attractive applications for building slabs and bridge decks. Such composite panels may contain air-filled gaps (caused by initial defects or ...

A growing body of research has shown that reversed cyclic shear loading of reinforced concrete (RC) causes effects that are not accounted for in monotonic behavioral models. Notable among these effects are a reduction in shear strength and significant plas ...

We prove stochastic homogenization for integral functionals defined on Sobolev spaces, where the stationary, ergodic integrand satisfies a degenerate growth condition of the form c|xi A(w, x)|p 5 f (w, x, xi) 5 |xi A(w, x)|p + A(w, x) for some p is an elem ...

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Frictional contacts lead to the formation of a surface layer called the third body, consisting of wear particles and structures resulting from their agglomerates. Its behavior and properties at the nanoscale control the macroscopic tribological performance ...

All mechanical systems, naturally occurring or human-produced, are subjected to friction and wear at the interface of solid constituents. Large portions of energy dissipation and loss of material, in every-day life and industrial applications alike, are du ...

Friction and wear occur at every interface between solid materials. In the design of mechanical devices, it is desirable to be able to quantify and control the amount of friction and wear, as well as predict their evolution with time. ``Tribology'' is the ...

We perform a combined experimental and computational investigation of the clove hitch knot. We develop a physical model for the clove hitch by tying an elastic rod onto a rigid cylinder. In the experiments, we characterize the mechanical performance, geome ...

When two rough surfaces slide against each other, two main behaviors can be observed at the asperity level: A ductile behavior where the asperities tend to smooth out or a brittle behavior where the asperities detach and form debris. Recently, a critical l ...

Across the seismogenic zone, the transition from brittle to plastic deformation corresponds to a semibrittle regime where brittle fracturing and plastic flow coexist at high strength conditions. Thorough experimental investigations on brittle-plastic trans ...

The use of molecular dynamics (MD) simulations has led to promising results to unravel the atomistic origins of adhesive wear, and in particular for the onset of wear at nanoscale surface asperities. However, MD simulations come with a high computational c ...

We introduce a new model to study the effect of surface roughness on the jamming transition. By performing numerical simulations, we show that for a smooth surface, the jamming transition density and the contact number at the transition point both increase ...

Mechanical watches are complex and sensitive systems that have to maintain a faultless precision over their lifetime. However, this precision can be altered by disturbances occurring during the functioning time, such as friction, lubricant drying, or wear, ...

The flow of a thin film coating the underside of an inclined substrate is studied. We measure experimentally spatial growth rates and compare them to the linear stability analysis of a flat film modelled by the lubrication equation. When forced by a statio ...

Adjoint-based sensitivity analysis is routinely used today to assess efficiently the effect of open-loop control on the linear stability properties of unstable flows. Sensitivity maps identify regions where small-amplitude control is the most effective, i. ...

Aggregate interlocking is a phenomenon occurring when the opposite sides of a concrete crack slide relative to each other. Due to surface roughness, protruding material from one crack-side can engage with the opposite one and thus exchange forces. This aff ...

Stability analysis of rough surfaces in adhesive normal contact

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Critical degeneracy in a nonlinear hyperbolic equation can produce atypical instability

Liquid film instability of an internally coated horizontal tube

On the relationship between the multi-region relaxed variational principle and resistive inner-layer theory

The influence of wood surface treatments with different biomolecules on dry and wet strength of linear friction welded joints

Effects of core air gaps and steel inserts on thermomechanical response of GFRP-balsa sandwich panels subjected to fire

The General Crack Component Model for reversed cyclic shear

Stochastic Homogenization Of Degenerate Integral Functionals And Their Euler-Lagrange Equations

Singular quadratic eigenvalue problems: linearization and weak condition numbers

Effect of wear particles and roughness on nanoscale friction

Bridging scales in wear modeling with volume integral methods for elastic-plastic contact

Modeling the origins of adhesive wear across scales

Exploring the inner workings of the clove hitch knot

Understanding the mechanisms of adhesive wear for heterogeneous materials through atomistic simulations

Fault Stability Across the Seismogenic Zone

Adhesive wear with a coarse-grained discrete element model

Jamming with Tunable Roughness

Tribological Approach to the Watch Movements

Instability of a thin viscous film flowing under an inclined substrate: steady patterns

Second-order adjoint-based sensitivity for hydrodynamic stability and control

The transfer of forces through rough surface contact in concrete