Nonlinear Dynamic Analysis Based on Experimental

The goal of this paper is to propose a nonlinear dynamic model based on experimental data and NBR-6123-87 to accomplish a nonlinear dynamic analysis of slender structures subjected to wind loading. At first we compute the static answer given by the mean wind speed. In this part of the problem we consider the concept of effective stiffness to rep-resent the physical nonlinearity of material and a P-Delta method to represent the ge-ometrical nonlinearity. Considering the final stiffness obtained in that P-Delta method, we compute the dynamic answer given by the floating wind speed, according to the dis-crete dynamic model given by NBR-6123-87. A 40m RC telecommunication tower was analyzed, and the results obtained were compared with those given by linear static and dynamic models. Copyright © 2006 M. A. Silva and R. M. L. R. F. Brasil. This is an open access article dis-tributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is prop-erly cited. 1