Fatigue Performance of Bird-Beak SHS Gap K-Joints under Brace In-Plane Force

This paper presents a test campaign concerning the fatigue behavior of the bird-beak square hollow section (SHS) gap K-joints subjected to brace in-plane force. A total of four bird-beak SHS gap K-joint specimens were tested. Prior to the high-cycle fatigue tests, static in-plane force was applied to the braces of K-joint to determine the hot-line strain distributions and the stress concentration factors (SCFs) via extrapolation. Based on the...