A METHOD FOR THE NONLINEAR DYNAMIC TIME HISTORY ANALYSIS OF TRAME STRUCTURES

The nonlinear dynamic time history analysis of tall framed structures is presented in this paper. In order to reveal the nonlinear behavior of beams and columns of framed structures, a more exact nonlinear beam model based directly on moment-curvature hysteresis loops is proposed. The type of hysteresis loops can arbitrarily be chosen, and the corresponding element stiffness matrix can be built up in a simple way. An exact technique of substrutural nonlinear dynamic analysis is also presented. With the technique proposed, direct dynamic analysis of large tall building structures can be carried out in a micro-computer.