Residual Stresses in Cold‐Formed Square Hollow Sections of High Strength Steel

Abstract In this study, the residual stresses were experimentally studied for cold‐formed square hollow section (CFSHS) with dimensions of 150×150×10 mm. The measured in both longitudinal and transverse directions S355J2H/S420MH S700MLH tubular sections. results showed that measuring on outer inner surfaces at a distance 60‐70 mm from end specimen is an accurate convenient method. For steel grades studied, highest flat regions close to corners. On face opposite weld seam, scattered clearly among different repetition tests differed values reported literature. influence grade was more observable faces weld. As weld, combined effect cold forming temperature affect stresses, it recommended quantify separately other faces. regions, so dominating can be neglected. scatter irregular corners indicate additional are needed randomness characteristic local stresses.