Dynamic Nonlinear Modelling of Building Structure Using the Force Analogy Method

The nonlinear analysis of civil engineering structures is still a topic of sigh significance for structural engineers. The use of an explicit time integration method is investigated in this paper. The time integration scheme is derived from the state-space model of the equation of motion. The Force Analogy Method (FAM) is used to account for physical nonlinearity of a 10-story reinforced concrete (RC) frame structure. Two earthquake recorded ground motions are used in this paper in the attempt to catch the accuracy of the investigated numerical scheme. The results are compared and validated with well established commercial software. The model described in this paper will ease and simplify the overall process of testing the structural behavior to a wide range of recorded and artificial ground motions.