Theory of Hydrodynamic Lubrication... cont from previous slide
- The total load bearing capacity per unit width is
After substituting h=h1 - αx with α=(h1-h2)/ l in the above equation and performing the integration,
 | (27.14) |
- The shear stress at the bearing plate is
 | (27.15) |
Substituting the value of 
from Eq. (27.14) and then invoking the value of Q in Eq. (27.15), the final expression for shear stress becomes
- The drag force required to move the lower surface at speed U is expressed by
 | (27.16) |
- Michell thrust bearing, named after A.G.M. Michell, works on the principles based on the theory of hydrodynamic lubrication . The journal bearing (Fig. 27.3) develops its force by the same action, except that the surfaces are curved.
FIG 27.3 Hydrodynamic action of a journal bearing
