Inertia Effect of the Fluid Particles on the Lubricant Flow in a Dynamic Thrust Bearings
Closed form equations are derived from the fundamental principles for the evaluation of volume flow rate of lubricant in between the pads of a thrust bearing accounting for the centrifugal inertia effect. Two types of configuration i.e. parallel disk and nonparallel disk configurations are considered. The theoretical analysis is presented.
Lubrication Analysis of a Rolling Piston Rotary Compressor: Part 1: Mathematical Modelling
This paper describes a mathematical model for the lubrication system of a single-vane rolling piston type rotary compressor. The lubricant flow in the compressor is modelled as a flow in a pipe network. Various flow resistances, pressure differentials and viscous pump effects are determined. Closed network equations are formulated. The equations are solved simultaneously, and the lubricant flowrates at various clearances of the compressor are calculated.
Tests of composite beams with web holes
Tests of composite beams comprising a concrete slab supported on a steel deck and a steel wide-flange shape containing large web openings are described. Special attention is directed to the amount of shear connection between slab and steel section in the region of a web hole, and on the effect of construction loads acting on the steel section prior to composite action being effective.It is shown that limited shear connection at the hole will significantly affect the strength when loading produces a high shear-to-moment ratio, and a theory is presented which conservatively takes this into account. The effect of construction loads on unshored construction is shown to be small when these do not exceed 60% of the non-composite beam resistance at the hole.