On the Characteristic of a Bolted Joint Subjected to an External Bending Moment : the case where clamped parts are circular flanges

概要

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In designing a bolted joint, it is important to estimate the force ratio. But this force ratio is the factor to be considered in the case where a load is applied only in the axial direction, but it is not considered when an external bending moment is applied on an assembly. In the previous paper, in the case of T-flanges, a force ratio for the external bending moment, which is the ratio of the increment of bolt axial force to the external bending moment, is introduced. In this paper, the force ratio for the external bending moment is analyzed in the case of circular flanges. The effect of the circular pitch diameter on the force ratio for the external bending moment is discussed. In addition, the stresses produced in bolts are analyzed. Then, in order to verify these analyses, experiments are carried out. Comparing these results, they are in a fairly good agreement.
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