Abstract: Accurately simulating the dynamic magnetostriction characteristics of electrical steel sheet is a significant step in the vibration and noise analysis of electrical equipment iron cores. A simulation method for dynamic magnetostriction characteristics based on Energetic and the improved Jiles-Atherton-Sablik (J-A-S) models is proposed. Firstly, based on the static Energetic hysteresis model and the loss separation theory, considering the dynamic loss density component caused by the excitation frequency, the dynamic Energetic hysteresis model is established by using the field separation technique. Then, the dynamic magnetic field calculated by the dynamic Energetic hysteresis model is used as a known quantity to the improved J-A-S model. And according to the nonlinear constitutive law of the ferromagnetic materials, a dynamic magnetostriction inverse model with magnetic induction as input is established. On this basis, the simulation process of dynamic magnetostriction curve is designed. Finally, the simulation results of the proposed method are compared with the measured results and the simulation results by the existing methods. It is found that the simulation results of the proposed method are in better agreement with the measured results, which verifies the accuracy of the proposed simulation method.