Abstract
General expressions are obtained for the stress distribution in an infinite flat plate end- loaded by equal principal stresses and containing a circular hole reinforced by a compact ring. The ring reinforcement being placed on one side of the plate only so that the other side of the plate remains flush.
It is shown that the effect of an asymmetrically placed reinforcement is to induce in the plate and reinforcement bending stresses which are not negligible compared with the externally applied direct stress. Furthermore, from particular examples considered, it is found that reinforcements having practical dimensions can give rise to stress concentrations in the same order of magnitude as those in a similarly loaded plate containing an unreinforced hole.
Thus, a reinforcement designed to satisfy B.S. 1500:1949 has a small compensating effect compared with a symmetrically placed reinforcement having the same cross-sectional area.
For practical purposes, data have been obtained which enable the designer to determine quickly the stress distributions associated with reinforcements and plates having a reasonably representative range of dimensions.
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