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The methodology presented in this paper is using a modeling approach based on the observation of the real microscopic material structure to predict the global macroscopic magnetization curve of the soft magnetic composites (SMCs) materials. It can be used to investigate the influence of the variability of all parameters of the microstructure on the global macroscopic magnetization curve of the equivalent homogenous material that is essential to the optimal design of SMC electromagnetic devices. The proposed method includes several steps: acquisition of the microscopic structure by image processing, simulation by FE analysis, and identification of the global macroscopic magnetization curve. The results are validated by a comparative analysis with experimental hysteresigraph measurements and analyzed in order to investigate the influence of the microscopic structure on the global magnetic properties of the SMC material.