Transient response characteristics of a bolted flange connection structure with shear pin/cone

Transient response characteristics of a bolted flange connection structure with shear pin/cone under different types of load are studied by a simplified dynamical model with material nonlinearity. It is found that different ratios of the longitudinal vibration frequency to the bending vibration frequency lead to superharmonic response or sub-harmonic response. The computational results indicate that the classical linear model is inadequate for studying the transient response of the bolted flange connection structure when the ratio of the longitudinal vibration frequency to the bending vibration frequency is around 2:1. Moreover, to reveal the effect of inclination angle of shear pin, a contour map of the transient response of the connection structure is illustrated over an angle range from 0° to 40°. It is found that the inclined shear pin redirects a part of transversal loads to longitudinal force.