REPORT NO. UCB/EERC-80/40 OCTOBER 1980 INELASTIC BUCKLING OF STEEL STRUTS UNDER CYCLIC LOAD REVERSALS by R. GARY BLACK W.A. BILL WENGER EGOR P. POPOV Report to Sponsors: National Science Foundation American Iron and Steel Institute COLLEGE OF UNIVERSITY OF CALIFORNIA . Berkeley, California REPRODUCED BY NA llONAl TECHNICAL INFORMAllONSERVICE u.s. OEPARTIHNT Of COMMERCE $PRlItGfIEU). VA 22161