Effect of thickness and boundary conditions on the behavior of viscoelastic layers in sliding contact with wavy profiles

Menga, Nicola; Afferrante, L.; Carbone, Giuseppe

doi:10.1016/j.jmps.2016.06.009

Cited by 69 publications

(36 citation statements)

References 40 publications

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“…In the last decades, contact mechanics, and in particular the effect of physical interactions occurring at the interface between elastic and viscoelastic solids, has found increasing scientific interest, mostly boosted by practical applications, such as tires, seals, bio-inspired climbing robots, and adhesive gloves. The contact behavior of such systems has been studied by many authors relying on different approaches: analytical techniques [1][2][3][4][5][6][7], advanced numerical simulations [8][9][10][11][12][13][14][15] and experimental investigations [16][17][18][19][20].…”

Section: Introductionmentioning

confidence: 99%

Do uniform tangential interfacial stresses enhance adhesion?

Menga

Carbone

Dini

2018

Journal of the Mechanics and Physics of Solids

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Section: Introductionmentioning

confidence: 99%

Do uniform tangential interfacial stresses enhance adhesion?

Menga

Carbone

Dini

2018

Journal of the Mechanics and Physics of Solids

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“…However, there exists several other applications, where a more proper formalism is required to take into account the effect of the substrate compliance on the detachment mechanism, as for instance studying the adhesive contact of medical Band-aids on human skin [63,64]. In this case, indeed, the deformability of the substrate have to be taken into account, and although the skin is usually modeled as a very compliant viscoelastic material [65][66][67][68], interesting results may be inferred neglecting viscous effects at low speeds, because in such case the behavior is essentially elastic [69][70][71].…”

Section: Introductionmentioning

confidence: 99%

The multiple V-shaped double peeling of elastic thin films from elastic soft substrates

Menga

Afferrante

Pugno

et al. 2018

Journal of the Mechanics and Physics of Solids

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In this paper, a periodic configuration of V-shaped double peeling process is investigated. Specifically, an elastic thin film is detached from a soft elastic material by applying multiple concentrated loads periodically distributed with spatial periodicity λ. The original Kendall's idea is extended to take into account the change in elastic energy occurring in the substrate when the detachment fronts propagate. The symmetric configuration typical of a V-peeling process causes the energy release rate to be sensitive to the variations of elastic energy stored in the soft substrate. This results in an enhancement of the adhesion strength, because part of the external work required to trigger the peeling mechanism is converted in substrate elastic energy. A key role is played by both spatial periodicity λ and elasticity ratio E/E h , between tape and substrate elastic moduli, in determining the conditions of stable adhesion. Indeed, the presence of multiple peeling fronts determines a modification of the mechanism of interaction, because deformations close to each peeling front are also affected by the stresses related to the other fronts. Results show that the energy release rate depends on the detached length of the tape so that conditions can be established which lead to an increase of the supported load compared to the classical peeling on rigid substrates. Finally, we also find that for any given value of the load per unit length, an optimum value of the wavelength λ exists that maximizes the tolerance of the system, before unstable propagation of the peeling front can occur.

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“…Similarly, a very sophisticated theoretical formulation exists able to deal with such a demanding problem [37,38], however, due to the fundamental mean-field nature of such a theory, its applicability to studies tailored to engineering applications is weak. As an alternative, semi-analytical models have been carried out [39,40]. In particular, in [40], the authors studied the sliding contact of viscoelastic layers of finite thickness on rigid sinusoidal substrates within the framework of Green's functions approach.…”

Section: Introductionmentioning

confidence: 99%

“…As an alternative, semi-analytical models have been carried out [39,40]. In particular, in [40], the authors studied the sliding contact of viscoelastic layers of finite thickness on rigid sinusoidal substrates within the framework of Green's functions approach. They considered two different boundary conditions of the viscoelastic layer: confined and free layer.…”

Section: Introductionmentioning

confidence: 99%

The Indentation Rolling Resistance in Belt Conveyors: A Model for the Viscoelastic Friction

2019

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In this paper, we study the steady-state rolling contact of a linear viscoelastic layer of finite thickness and a rigid indenter made of a periodic array of equally spaced rigid cylinders. The viscoelastic contact model is derived by means of Green’s function approach, which allows solving the contact problem with the sliding velocity as a control parameter. The contact problem is solved by means of an accurate numerical procedure developed for general two-dimensional contact geometries. The effect of geometrical quantities (layer thickness, cylinders radii, and cylinders spacing), material properties (viscoelastic moduli, relaxation time) and operative conditions (load, velocity) are all investigated. Physical quantities typical of contact problems (contact areas, deformed profiles, etc.) are calculated and discussed. Special emphasis is dedicated to the viscoelastic friction force coefficient and to the energy dissipated per unit time. The discussion is focused on the role played by the deformation localized at the contact spots and the one in the bulk of the thin layer, due to layer bending. The model is proposed as an accurate solution for engineering applications such as belt conveyors, in which the energy dissipated on the rolling contact of idle rollers can, in some cases, be by far the most important contribution to their energy consumption.

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Effect of thickness and boundary conditions on the behavior of viscoelastic layers in sliding contact with wavy profiles

Cited by 69 publications

References 40 publications

Do uniform tangential interfacial stresses enhance adhesion?

Do uniform tangential interfacial stresses enhance adhesion?

The multiple V-shaped double peeling of elastic thin films from elastic soft substrates

The Indentation Rolling Resistance in Belt Conveyors: A Model for the Viscoelastic Friction

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