Computer modelling of an extended end-plate bolted connection

Abstract

A methodology, based on finite element modelling, is studied to develop analytically the moment-rotation relationship for a steel bolted end-plate connection. ANSYS, a large-scale general-purpose finite element code is selected for equivalent two-dimensional (2-D) analysis. The end-plate, beam and column flanges, web and bolt shanks in the tension region are represented as plane-stress elements with their width equal to their thickness measured perpendicular to the web. Interface elements are used to model the boundary between column flange and rear of end-plate that may make or break contact. Based on deformation and stress contours of a 2-D model the contribution of beam web to the behaviour is discussed from which two types of end-plate deformation can be identified. The methodology is demonstrated for an extended end-plate connection and the results are compared against experimental data to verify the feasibility of the modelling and associated computer analyses.