STOCHASTIC FEM MODEL OF ONE-DIMENSIONAL HYDRODYNAMIC BEARINGS WITH ROUGH SURFACES

A stochastic finite element model of a one-dimensional hydrodynamic be aring with rough surfaces (longitudinal and transverse roughnesses), c onsidering film thickness to be a stochastic variable, has been formul ated and steady-state characteristics studied. The results expressed a s mean values of load carrying capacity, how rate, frictional force an d coefficient of friction (in non-dimensional form) are in good agreem ent with those obtained by analytical methods by previous investigator s. Further standard deviation of pressure, at a given node, has been c alculated for different input standard deviations of stochastic variab le and scales of fluctuation using the first-order (perturbation)secon d moment method.