Study of Behaviour of Beams and Panels based on Influence of Rigidity

The aim of this paper is the elaboration of a study on the real behaviour of beams and thin panels considering the effect of large deflection. The classic plate theory was developed for panels whose deflections are lower than their depth. This is so-called a simple deflection theory. At thin panels of steel or structural glass the deflections are higher than their depth. Therefore, we have to apply the large deflection theory. Membrane effects influence the behaviour of thin panels. Typical rigid beams can be analyzed by a classic elastic theory. The results of large deflection theory give more accurate image of behaviour of non-rigid structures. Therefore, it is necessary to realize non linear calculations. The numerical models are realized using ANSYS software based on finite element method. Numerical models were realised using space and planar finite elements. They were analyzed by linear and nonlinear computation. The resulting computations were compared. Results using large deflection theory may provide more favourable base for designing of structural element and they correspond to actual beam and plate behaviour.