Abstract
The main difficulty occurring in the analysis of plastic structures lies in the plasticity criterion. Usually an incremental method is needed to solve such a problem. The originality of the present method is the introduction of a new transformed parameter Y linked to both the local material behaviour and structural coupling which leads to an easy solution. Y solutions to find limit loads or stabilized cyclic response to cyclic loads can easily be found. Some applications will be shown. Extensions to problems such as shot-peening, viscoelastic behaviour and transient dynamic loads have already been derived, applied and satisfactorily compared with experimental data. This approach has been shown to be a very useful tool for the design in the explored fields and could be applied to a very large class of other problems.
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