effects of the surface roughness on sliding angles of

Effect of surface roughness on the angular acceleration

hydrophobic surface with a contact angle of 160° and a sliding angle of 1° for a 7 mg water droplet. Feng et al. [38] prepared a super-hydrophobic surface on a carbon nanotube with a contact angle of 166° and a sliding angle of 3° for a water droplet. They believed that an increased surface roughness

Effects of Rock Foundation Roughness on the Sliding

Jul 07, 2019 · It is shown that global roughness along damrock interfaces can substantially increase their shear strength. Natural local shear keys at a damrock interface may greatly improve the sliding stability of gravity dams; however, their effect is found to be sensitive to The effect of surface roughness on normal restitution Feb 15, 2020 · Feb 15, 2020 · The effect of the surface roughness will be reduced as the surface roughness increases, which is the reason for the decrease rate of the normal restitution coefficients decreases gradually. With the incident velocity increases, the normal restitution coefficients continue to increase, which means particle-wall collision is in the stage of elastic deformation.

Investigating the effect of surface roughness on the

Aug 06, 2015 · Aug 06, 2015 · One of the earliest researches regarding the effect of surface roughness on adhesion has been carried out by Fuller and Tabor. This investigation concerned the contact between a rubber surface and a polymer surface (methyl methacrylate; PMMA) . They discovered that a fivefold increase in surface roughness reduces the adhesion force by 10 % relative to the adhesion force between two smooth surfaces.