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Materials 2017, 10(4), 405; doi:10.3390/ma10040405

Study on Protection Mechanism of 30CrMnMo-UHMWPE Composite Armor

1
School of Materials Science and Engineering, Beijing Institute of Technology, Beijing 100081, China
2
National Key Laboratory of Science and Technology on Materials under Shock and Impact, Beijing 100081, China
3
Beijing Winyarn High Performance Fiber Company Limited, Beijing 101407, China
*
Author to whom correspondence should be addressed.
Academic Editors: George Papanicolaou and William G Proud
Received: 24 January 2017 / Revised: 17 March 2017 / Accepted: 6 April 2017 / Published: 12 April 2017
(This article belongs to the Special Issue Theory, Experiment and Modelling of the Dynamic Response of Materials)
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Abstract

The penetration of a 30CrMnMo ultra-high molecular weight polyethylene armor by a high-speed fragment was investigated via experiments and simulations. Analysis of the projectile revealed that the nose (of the projectile) is in the non-equilibrium state at the initial stage of penetration, and the low-speed regions undergo plastic deformation. Subsequently, the nose-tail velocities of the projectile were virtually identical and fluctuated together. In addition, the effective combination of the steel plate and polyethylene (PE) laminate resulted in energy absorption by the PE just before the projectile nose impacts the laminate. This early absorption plays a positive role in the ballistic performance of the composite armor. Further analysis of the internal energy and mass loss revealed that the PE laminate absorbs energy via the continuous and stable failure of PE fibers during the initial stages of penetration, and absorbs energy via deformation until complete penetration occurs. The energy absorbed by the laminate accounts for 68% of the total energy absorption, indicating that the laminate plays a major role in energy absorption during the penetration process. View Full-Text
Keywords: 30CrMnMo-UHMWPE; finite element analysis; ballistic performance; protection mechanism 30CrMnMo-UHMWPE; finite element analysis; ballistic performance; protection mechanism
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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Zhou, Y.; Li, G.; Fan, Q.; Wang, Y.; Zheng, H.; Tan, L.; Xu, X. Study on Protection Mechanism of 30CrMnMo-UHMWPE Composite Armor. Materials 2017, 10, 405.

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