| This research presents numerical and mathematical techniques for nonlinear analysis of frames according to different criteria restricting their applicability, from the practical point of view, as the load increases until the collapse. These techniques are applied to 2D steel frames of straight slender beams. Besides the static analysis techniques to determine stress and deflections the ability to evaluate the buckling loads, natural frequencies and corresponding vibration modes is tentatively included. The objective is to know the response (static and dynamic one) of the structure beyond linear elastic behaviour. Some of analyzed factors are easily observable or measurable by experimental methods, mainly the related ones with dynamical properties.;With these work we try to make a tentative proposal to monitoring techniques, structural health monitoring and damage assessment and damage location. No similar approaches have been found in the literature. Hence, only through further research we will able to know the accuracy of the proposed techniques. |
