Optimisation des structures métalliques élastoplastiques sous conditions de rigidité et de plasticité données

ABSTRACT The design of optimal elastic-plastic steel frames is improved by a new treatment of rigidity and yield conditions for a finite element under uniform load. It allows avoiding an investigation of loading history, herewith not increasing elements number, in case of nonlinear physical model of material. Also, structure's minimal volume is obtained using a new dispersion estimation methodology of the real cross-sections geometrical characteristics. The designing is implemented using MATLAB© environment toolbox « JWM SAOSYS Toolbox v0.42 » created by the authors.

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