Experimental Study and Numerical Simulation of Plane Flyer Driven by Detonation of JO-9159 and JB-9014 Composite Charge

In order to research the characteristic of how the scale of series composite charge explosives (JO-9159/JB-9014) affect energy output, FEM software AUTODYN was used to simulate the plane flyer test, and relevant experiments were carried out to verify the result of analog.It is showed that the relative error of the velocity of the flyer between experimental value and calculated value is 0.2%-3.0% and the relative error of the ratio dynamic energy is 0.4%-6.0%.Therefore, the simulation model is reasonable.And then the model and the material parameters were applied to calculate the structures of series composite charge explosives in different height ratios.From the calculation, the relation of structure size and energy output was studied and the exponential function between the size of the explosives and the velocity of the flyer was obtained.In conclusion, the first peak velocity of the flyer grows closer to the second as the high explosive composition increases.In contrast, the first peak velocity is less than the second as the insensitive explosive composition increases, and the velocity has a major zoom during the whole process.