A More General Capillary Adhesion Model Including Shape Index: Single-Asperity and Multi-Asperity Cases

Wang, Lefeng; Régnier, Stéphane

doi:10.1080/10402004.2014.951751

Cited by 5 publications

(6 citation statements)

References 35 publications

(23 reference statements)

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“…Based on the existing models, ,− the meniscus surface parallel to the symmetry axis is a circular arc of radius r between two identical spheres with radius R s . Figure shows the two principal radii l and r of the capillary with R s ≫ l ≫ r .…”

Section: Data Analysesmentioning

confidence: 99%

Influence of Relative Humidity on Interparticle Capillary Adhesion

2021

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A homemade instrument is designed to directly characterize the adhesion between two rigid polymeric microspheres in the presence of moist air. The tensile load is measured as a function of approach distance at designated relative humidity (RH). The measurement is consistent with our model from the first approximation. The model is further extended to include a rough surface. Capillary adhesion force is shown to be monotonically increasing with RH for smooth surfaces but becomes more pronounced at low RH for rough surfaces. Moisture has a profound influence on interparticle adhesion, which has significant impacts on a wide range of industrial applications.

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Section: Data Analysesmentioning

confidence: 99%

Influence of Relative Humidity on Interparticle Capillary Adhesion

2021

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“…22,23 Wang, et al found that a more detailed description of rough surfaces was helpful to better quantify the capillary adhesion between rough surfaces. 24 Takao, et al analyzed the adhesive contact problem for anisotropic materials by considering surface stress and surface elasticity. 25 Fan, et al established a cohesive zone model of adhesive contact in nonhomogeneous materials.…”

Section: Introductionmentioning

confidence: 99%

A mathematical model for evaluating adhesion contact of an elastomeric seal-on-seal structure

Liao

Sun

et al. 2021

Proceedings of the Institution of Mechanical Engineers, Part C:

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For low impact docking systems (LIDS) developing for rendezvous and docking of spacecraft, the main interface docking seal (MID seal) is one of the key components, and its seal and adhesion performances are crucial for mating LIDS-adapted spacecrafts. An elastomeric seal-on-seal structure is one of the mainstream designs of the MID seal and is generally made of silicone rubbers that can adapt to complex space environments. For the MID seal of seal-on-seal structure, the adhesion performance has been confirmed to have significant effects on the separation reliability of mating spacecrafts. By analyzing the sealing and adhesive mechanisms of the MID seal that is an elastomeric seal-on-seal structure, an adhesive contact model of single rough peak is derived on the grounds of Johnson, Kendall and Roberts (JKR) theory. Utilizing the asperities model and the adhesive contact model of single rough peak, an adhesive contact model of the elastomeric seal-on-seal structure is further proposed. The experiments were performed to verify the adhesion model, and the satisfied consistencies were presented in the comparative studies of the experimental data and the calculated data. Based on the proposed mathematical model, the simulation analyses were performed to disclosure adhesive performances of the MID seal. The influence rules of some parameters on adhesive performances were presented, including material parameters, geometric parameters, and parameters of surface morphology. The research findings are proven to be favorable for the design, machining, assemblage and actual service of the MID seal, and can be also used for other elastomeric seals.

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“…Wang and Regnier developed a capillary adhesion model for the contact of a single asperity of a power law shape with a flat surface and extended it to the contact between rough surfaces [38].…”

Section: Introductionmentioning

confidence: 99%

Adhesive force model at a rough interface in the presence of thin water films: The role of relative humidity

Bazrafshan

Rooij

Schipper

2018

International Journal of Mechanical Sciences

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This paper proposes a Boundary Element Model (BEM) for the adhesive contact at the rough interface of two contacting bodies, where a thin water film is adsorbed on the surfaces due to the condensation from the humid environment. Three adhesive components contribute to the total adhesive force: solid-solid and liquid-solid van der Waals interactions and capillary force. Rather than a film with uniform thickness, the true distribution of the water film over the surfaces is considered. The capillary component of the adhesive force is first verified through the wellknown capillary force model at the smooth contact of a rigid ball-on-flat configuration for different values of the Relative Humidity (RH) of the environment. Then, the adhesive contact at a rough interface with three different relative auto-correlation lengths under different normal loads is considered. It is found that the capillary force dominates the total adhesive force and it increases with RH, while the other two adhesive components are rather constant. In addition, the capillary force appears to first increase with RH and then decrease as almost the entire noncontact area of the interface is covered by a meniscus. This variation in the capillary force depends on the auto-correlation length, roughness rms of the rough interface, and the normal load. Furthermore, it is confirmed that the capillary force, while employing a water film with uniform thickness, deviates that of the true distribution of this film.

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A More General Capillary Adhesion Model Including Shape Index: Single-Asperity and Multi-Asperity Cases

Cited by 5 publications

References 35 publications

Influence of Relative Humidity on Interparticle Capillary Adhesion

Influence of Relative Humidity on Interparticle Capillary Adhesion

A mathematical model for evaluating adhesion contact of an elastomeric seal-on-seal structure

Adhesive force model at a rough interface in the presence of thin water films: The role of relative humidity

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