RESEARCH ON THE LOAD BEARING FORCE IN NARROW SLIDING RADIAL BEARINGS (L < 0,7 D) OPERATING IN SHOCK CONDITIONS

Ioan Marius ALEXANDRESCU, Radu Iacob COTEȚIU, Simion HARAGÂȘ

Abstract


It was highlighted how to carry out the load bearing force of the narrow sliding bearings operating under shock and vibration, in the case of movement to close the surfaces of the spindle and the coupling, by the expulsion effect of the lubricant from the interstices ("squeeze film"). Taking into account the minimal lubricant thickness determined in static load conditions, the variations of the instantaneous load force were determined, depending on the adimensional thickness of the lubricant film for the three launching heights of weight (5 cm, 20 cm, 40 cm) and the variation of the instant bearing force of the bearing in dimensional form (Ai, Bi, Ci – in N) is based on the minimum thickness of lubricant hi, respectively, depending on the time of the shock (ci (sec)).


Key words: Radial bearing, lubricant, hydrodynamic regime, squeeze film, instant load bearing force.


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References


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