Penetration depth for yaw-inducing bursting layer impacted by projectile |
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Authors: | Wan-xiang Chen Zhi-kun Guo Qi-hu Qian Jun-hua Ye and Xiao-zhuang Xu |
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Affiliation: | [1]School of Civil Engineering and Transportation, South China University of Technology, Guangzhou 510640, China [2]Engineering Institute of Corps of Engineers, PLA University of Science and Technology, Nanjing 210007, China |
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Abstract: | In order to accurately estimate the anti-penetration capacity of yaw-inducing bursting layer with irregular barriers on surface
impacted by projectile, the theoretical model of attack angle and angular velocity for projectile impacting on irregular barrier
was achieved according to the macroscopic relation of contact force versus contact time, in which the main factors such as
the relative geometrical characteristics of projectile and irregular barrier, material property and impact velocity of projectile
influencing on yaw-inducing effectiveness were considered. On the basis of considering synthetically the influences of attack
angle, impact velocity, impact angle of projectile and uncontrolled free surface of target, the theoretical formulation of
penetration depth for bursting layer with irregular barriers on surface impacted by projectile was presented by expressing
the stress of an optional point on the nose of projectile according to the relation of stress versus velocity. The theoretical
results indicate that in the case of oblique impact embodying effect of attack angle, the penetration depth is reduced with
the increase of impact angle, attack angle or angular velocity, and penetration trajectory is also deflected obviously. The
effectiveness of angular velocity influencing on penetration depth is increased with impact velocity increasing. The theoretical
results are in good agreement with test data for low impact velocity. |
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Keywords: | solid mechanics penetration depth contact mechanics computation method yaw-inducing bursting |
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