ABSTRACT
Thus appears the non-linear analysis, which attempts to evaluate the behaviour of structures using the properties of materials that are variable. To make a model of this variability makes the analysis extremely complex. In the FEM this involves an evaluation of the constitutive matrix according to the concepts of the theory of plasticity and the mechanics of fractures. This process is necessarily non-linear, and therefore repetitive, which involves an increase both in complexity and in computational time.
