The Force Ratio of Bolted Joints : The case where clamped parts are flanges

抄録

In designing a bolted joint it is important to find the ratio of an increment of an axial force produced in a bolt to a load applied to an assembly, that is the force ratio. In previous paper, the tensile spring constant K_pt for the clamped part is introduced when a load is applied on the outer circumference of clamped parts and the force ratio is calculated by using K_pt. In this paper, the similar method is applied to calculation of the force ratio of flanged connections. Moreover, the bending moment produced in the bolt corresponding to the applied load is analysed. In order to verify these theoretical analyses, an experiment if carried out. The obtained results are as follows. (1) The theoretical values show a fairly good agreement with experimental ones. (2) In evaluation of sealing effect of flanged connections the raised face joints are more effective than the flat face joints.