A generalized numerical procedure for nonlinear analysis frames exhibiting a limit or a bifurcation point

Siu Lai Chan

Department of Civil and Structural Engineering,Hong Kong Polytechnic, Kowloon, Hong Kong

Received March 1990

ABSTRACT:

A generalized numerical scheme for nonlinear analysis of framed structures is presented. The proposed numerical technique is aimed at improving the reliability and efficiency of a computer program for nonlinear analysis of structures exhibiting a limit or a bifurcation point. A simple and automatic energy method for the transformation of a bifurcation point to a limit point for the tracing of the realistic post buckling path is also suggested. The combined numerical strategy proposed in this paper and recommended for general nonlinear problems will greatly enhance the feasibility and user-friendliness of a nonlinear analysis computer program for general users.