Abstract
The previous paper (Part 1) described the magnitude of plastic deformation introduced into beam-ends. In this paper (Part 2), based on the same numerical results, we deal with hysteretic behavior. Cumulative plastic rotation, the increment of plastic rotation during each half cycle of vibration, and the hysteretic process of plastic rotation are discussed. A method is proposed to approximate damage to the beams in steel moment frames subjected to strong ground motions.