A HYSTERESIS MODEL FOR PLANE STEEL MEMBERS WITH DAMAGE CUMULATION EFFECTS

In order to consider the effects of damage cumulation on the structura l responses, a damage model for steel structural members based on plas tic strains of the material has been proposed. Adopting the hypotheses of elasto-plastic damage hinges and the damage concentrated at the en ds of a steel member, a hysteresis model for plane steel members with effects of damage cumulation has been built. The proposed model can co nsider the following effects: strain hardening effect and strength deg eneration effect caused by damage cumulation. Finally, by means of thi s model, an elasto-plastic stiffness matrix is built for plane steel m embers with damage cumulation effects. (C) 1998 Published by Elsevier Science Ltd. All rights reserved.