To study the mechanical property of hydraulic autofrettaged gun tube
the stresses of ordinary gun tube firing were simulated by ANSYS.Also
the numerical simulations of the hydraulic autofrettage were run for nine different hydraulic pressures and the residual stresses of hydraulic autofrettaged gun tube were obtained.Nine different hydraulic gun tubes were applied to same gun chamber pressure and the stresses of hydraulic autofrettaged gun tube firing were simulated.The Von-Mises stresses of ordinary gun tube and hydraulic autofrettaged gun tube applied to same gun chamber pressure were compared.The optimum hydraulic range and super strain were obtained by comparison.
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