Abstract
The projectile extrusion process is an extremely important part of the initial trajectory of the artillery launch. The differentiation of the extrusion process brings about the stability problem of the extrusion process, which directly affects the stability and safety of the artillery, ballistic and projectile launching process. sex. Since the simplified chip intrusion resistance model does not pay attention to the projectile movement process and the formation process of the elastic belt groove, and only studies the change law of the intrusion resistance, the model is relatively simple and the parameters are easy to determine. In this paper, a quasi-static test device for the extrusion process of the elastic belt is established. The model is calibrated with the simplified chip resistance model with the intrusion process. Finally, the model is used to calculate the resistance along the process of a large-caliber howitzer projectile extrusion process, and it is compared with the embedded resistance test results of a large-caliber howitzer., the results show that in the whole process of extrusion, the relative error between the calculated value of the total extrusion resistance and the experimental value is basically below 10%, and the maximum relative error is 10.98%, which verifies the accuracy of the model.
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