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Engineering calculation model for oblique penetration into concrete target by earth penetration weapon
Received date: 2015-12-17
Revised date: 2016-01-25
Online published: 2016-02-17
Supported by
National Basic Research Program of China (61314302)
In order to study trajectory of earth penetration weapon during penetration under stress asymmetry, in combination of kinetic basic equations and classical cavity expansion theory, an engineering model of projectile penetrating into concrete with incident angle and yawed angle is established using surface splitting mechanism. The relationship between the trajectory of projectile head and yawed angle, incident angle and velocity is obtained using the model. The results show that the penetration depth decreases obviously with the increase of incident angle, and the curve arc of the projectile's head is larger. The deflection torque increases with the increase of yawed angle. The engineering model is verified by experiment, and the results are in good agreement with the experimental results. The model can effectively reflect the main characteristics of oblique penetration process. The applicability and rationality of the model are also proved.
XUE Jianfeng , SHEN Peihui , WANG Xiaoming . Engineering calculation model for oblique penetration into concrete target by earth penetration weapon[J]. ACTA AERONAUTICAET ASTRONAUTICA SINICA, 2016 , 37(6) : 1899 -1911 . DOI: 10.7527/S1000-6893.2016.0031
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