This paper presents a novel beam-column connection for steel moment resisting frames

in which the post-tensioning forces provide the ability of self-centering under earthquake

and the bottom flange friction device（BFFD）

located at beam ends

provides the energy dissipation.The operation principle and constitution of the BFFD connection are presented.Based on the low cyclic test results of the BFFD connection

a numerical model is established by using the Open System for Earthquake Engineering Simulation （OpenSees） to model the hysteretic behavior of the BFFD connection

including the gap opening/closing

self-centering

friction energy dissipation and the bolt bearing

etc.Comparison between the numerical simulation and the experiment results shows that the proposed numerical model can accurately simulate the hysteretic behavior of the BFFD connection.