ESTIMATION OF ELASTIC BUCKLING LOAD OF CFRP BONDED STEEL PLATES

Abstract

The purpose of this study is to clarify the effect of CFRP bonding on the elastic buckling load of steel plates when the elastic putty is inserted. First, uniaxial compression tests were conducted on CFRP-bonded steel plates with elastic putty inserted between the steel plate and CFRP, and the difference in buckling load between steel plates with/without elastic putty was confirmed. Then, the buckling eigenvalues of the CFRP-bonded steel plates are calculated using the finite element method, and the difference in the elastic buckling load improvement effect with/without elastic putty is evaluated. Finally, a method is proposed for estimating elastic buckling load with the effects of adhesive and elastic putty.