Abstract
In this paper, bearing strength of the steel plates in single bolted connection was studied to clear mainly the effects of following factors; (1) edge distances of the plate from the centre of circular hole. (2) yield ratio of the material. Theoretical results were obtained by finite element method in elasticplastic-strain hardening range, and variations of yield ratio were assumed to be 0.5, 0.7 and 0.9. Theoretical values obtained were checked by the tests, in which grade of steel were adopted SS 41, SM 50 and SM 50 Y. The important results obtained from this study are as follows, (1) When the nominal stress of bearing (P/Dt, P : load, D : diameter of the bolt, t : thickness of the plate) is over 1.20 times as high as yield point, the specimen generally yields. (2) If ultimate strength of bearing is defined as the strength which corresponds to the equivalent plastic strain at any part of the plate becomes 0.2, it is 2.06 times as high as yield stress in the case when the yield ratio of the material is 0.7.
