Abstract
The aim of this research work is to study low cyclic fatigue behavior of extended end plate connection by changing the connection geometrical parameters. In spite of numerous researches performed in end plate connection, works related to cyclic fatigue behavior of steel connections is found to be less. Five number of beam-column connection specimens were tested under cyclic loading condition. The low cyclic fatigue behavior was examined for varied end plate thickness keeping the diameter of bolt as constant and vice versa. The displacement approach as per FEMA 461, was used to investigate the moment capacity of the connection. The moment-rotation hysteresis curve was obtained for each specimen and fatigue life was calculated based on number of cycles required for failure of specimen. Using the relation between plastic strain, fatigue life and moment capacity, total hysteresis energy was calculated. From the comparison of results of five specimens tested, the one used with thicker end plate has shown better performance in terms of moment capacity as well as energy dissipation.
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