ボルト締結された円形フランジの軸方向剛性 : フランジ接合面が分離している場合

抄録

In order to analyze the vibration of a structure connected with bolts, it is necessary to estimate the rigidity of bolted connections. Some studies have been reported on annular flange connections. In these studies, the bolt axial force and the sealing performance are examined in detail, but the rigidity of annular flange connections is not sufficiently discussed. This paper deals with a calculation method for estimating the rigidity of bolted annular flange connections subjected to external loads in the axial direction. In the analysis, a model for estimating the axial rigidity of annular flange connections is proposed taking into account the dispersiveness of bolt disposition and the rigidity of flange-shell junction. That is, the annular flange is replaced with a plate and the hub with a cylindrical shell. For verification, experiments are carried out. Calculated results are in fairly good agreement with experimental ones.