Transformer vibration characteristic and layered optimization method considering magnetic-force coupling effect of iron core material

The invention discloses a transformer vibration characteristic and layered optimization method considering a magnetic-force coupling effect of an iron core material, and the method comprises the steps: building a magnetostriction model through deducing a magnetic force nonlinear constitutive relational expression of the magnetic field intensity and strain of the material, and carrying out the research of the influence rule of a characteristic parameter on a hysteresis loop, feature parameter extreme values needing to be identified in the optimization algorithm are determined, then a transformer multi-physics field coupling calculation model is established, and structural optimization is carried out; according to the method, the parameters of the hysteresis model under different stresses can be determined, coupling calculation can be carried out on multiple physical fields in the aspect of transformer vibration, the running state of the transformer can be simulated more accurately and quickly, and the maintena