Abstract
In order to analyze the vibration of a structure whose elements are connected with bolts, it is necessary to estimate the flexural rigidity of bolted connections : But, although a few papers have reported studies of flexural rigidity, it remains to establish a calculation method for flexural rigidity. This paper deals with a calculation method to estimate the flexural rigidity of bolted annular flanged connections subjected to an external bending moment. In the analysis, models for estimating the flexural rigidity Kb of bolts, and of annular flanges Kf are proposed, taking account of the dispersiveness of bolt disposition. Thus, a calculation method for obtaining whole flexural rigidity of bolted flanged connections is proposed, using the values of Kb and Kf For verification, experiments are performed under several conditions. Calculated results are in a fairly good agreement with experimental ones.
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