Official websites use .gov
A
.gov website belongs to an official
government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you've safely
connected to the .gov website. Share sensitive
information only on official, secure websites.
Total normal contact traction (a) for early time response (t = 0.01 sec) (b) an intermediate time when the pool of lubricant has collapsed (t = 500 sec), and (c) near equilibrium response (t = 10000 sec). For this case W = 0.5kN/m, R = 0.1 m, α = 2.5μm and λ = 500μm.
