Theory solution of weld toe stress and strain of weld joint under cyclic loading in plane stress condition

A theoretical method was proposed to precisely predict stress and strain in weld toe of butt joint under cyclic loading in plane stress condition, based on elastic-plastic mechanics theory. The analytical solutions of stress and strain in weld toe of butt joint under cyclic loading in plane stress condition were obtained. The stress and strain in weld toe could be calculated by analytical solution when the material properties, load value and stress concentration factor on the weld toe were known. The proposed method could predict fatigue failure of welded joint under cyclic loading.