Experimental and Theoretical Studies on the Penetration of Calcareous Sand

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Journal of Vibration and Shock ›› 2019, Vol. 38 ›› Issue (17) : 232-237.

MIAO Weiwei1, QIU Yanyu1,2,CHENG Yihao1, WEN Zhu2, GUO Lei2, WANG Mingyang1,2

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Abstract

Here,cone-shaped projectiles with the diameter of 14.5 mm were used to conduct penetration tests of calcareous sand within the impact speed range of 300-1 000 m/s to observe projective abrasion,media crushing and penetration depth.The quasi-fluid penetration theoretical model for rigid projectiles penetrating calcareous sand was built.Its calculation results were compared with test ones.Results showed thatafter projectiles penetrating, their warheads have obvious abrasion scratches; there are white powders formed by crushing the original sand near projectiles’trajectories; penetration depth of projectiles in calcareous sand increases with increase intheir impact speed; the model results agree better with test ones,soit can be used to predict calcareous sand’s penetration depth within the impact speed range of 300-1 000 m/s.Finally, the normalized penetration depth calculation formula was deduced.

Key words

calcareous sand / penetration experiment / theoretical study / quasi-fluid

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MIAO Weiwei1, QIU Yanyu1,2,CHENG Yihao1, WEN Zhu2, GUO Lei2, . Experimental and Theoretical Studies on the Penetration of Calcareous Sand[J]. Journal of Vibration and Shock, 2019, 38(17): 232-237

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