56 citations · 85 across the 12 of their papers we have counts for
10 papers · 1 filter
Air, helium and water leakage in rubber O-ring seals with application to syringes
C. Huon, A. Tiwari, C. Rotella +2
We study the leakage of fluids (liquids or gases) in syringes with glass barrel, steel plunger and rubber O-ring stopper. The leakrate depends on the interfacial surface roughness…
Rubber adhesion and friction: role of surface energy and contamination films
A. Tiwari, T. Tolpekina, Hans van Benthem +2
We study the influence of the surface energy and contamination films on rubber adhesion and sliding friction. We find that there is a transfer of molecules from the rubber to the s…
Cylinder-flat contact mechanics with surface roughness
A. Tiwari, B. N. J. Persson
We study the nominal (ensemble averaged) contact pressure acting on a cylinder squeezed in contact with an elastic half-space with random surface roughness. The contact pres…
Fluid leakage in metallic seals
F. J. Fischer, K. Schmitz, A. Tiwari +1
Metallic seals are crucial machine elements in many important applications, e.g., in ultrahigh vacuum systems. Due to the high elastic modulus of metals, and the surface roughness…
Two comments on adhesion
A. Tiwari, J. Wang, B. N. J. Persson
The adhesion paradox refers to the observation that for most solid objects no adhesion can be detected when they are separated from a state of molecular contact. The adhesion parad…
Cylinder-flat contact mechanics during sliding
J. Wang, A. Tiwari, I. M. Sivebaek +1
Using molecular dynamics (MD) we study the dependency of the contact mechanics on the sliding speed when an elastic block (cylinder) with a surface height profi…