evaluation of concentric braced frame modeling methods

Special concentrically braced frames (scbfs) are one of the structural systems resisting against lateral loads inseismic regions. evaluating the performance of these systems requires accurate modelling of the braces. various modelshave been developed to simulate the behaviour of the braces. some of these methods are more accurate and sophisticatedbut some are simpler. all the methods attempt to implement buckling, tension yielding, and inelastic post-buckling response in the braces.