A novel 3D simulation prediction model of mechanical properties of ferromagnetic materials via incremental permeability method

Ferromagnetic material is one of the basic materials in industrial production and whose mechanical properties are key indicators to evaluate quality. At present, incremental permeability (IP), one method of nondestructive testing, is used in the mechanical properties testing field of ferromagnetic materials, but its 3D simulation prediction model and method have not been established. To solve this problem, a finite element simulation method for mechanical properties of ferromagnetic materials based on Jiles-Atherton (JA) hysteresis model was proposed in this paper, which is established on the basis of the experimental method of electromagnetic nondestructive testing via incremental permeability. In this paper, the finite element 3D simulation prediction model based on IP method is proposed. Besides, the difficulty in JA hysteresis model parameter measurement is solved by combining magnetic-force method and artificial fish swarm algorithm. The 3D simulation prediction model is applied to the yield strength prediction of ferromagnetic materials for the first time. By testing the yield strength of the material, the simulation method and 3D simulation prediction model proposed in this paper can accurately reflect the incremental permeability characteristics of real materials and can provide a simulation platform for testing the mechanical properties of ferromagnetic materials via IP method.