Delamination process in cross-ply UHMWPE laminates under ballistic penetration  

作　　者：Gen-lin Mo Qian-wen Ma Yong-xi Jin Wen-min Yan Zhong-xin Li Zhi-lin Wu 

机构地区：[1]Institute of Advanced Manufacturing,Jiangsu University,Zhenjiang,212013,China [2]Key Laboratory of Transient Shock,Beijing,102202,China [3]Zhenjiang Hospital of Traditional Chinese Medicine,212013,China [4]School of Mechanical Engineering,Nanjing University of Science and Technology,Nanjing,210094,China

出　　处：《Defence Technology（防务技术）》2021年第1期278-286,共9页Defence Technology

基　　金：the Research Foundation for Advanced Talents of Jiangsu University(15JDG038);the Foundation of National Laboratory(601010417);the Natural Science Foundation of the Jiangsu Higher Education Institutions of China(19KJB130003).

摘　　要：Cross-ply unidirectional laminates made of ultra-high molecular weight polyethylene fibers are widely used as components of bullet-proof vests.To simulate the delamination process of the material under penetration,we constructed a numerical mechanical model,which was validated by tests using 7.6239 mm rifle bullets penetrating laminates of different thicknesses.The results show that the delamination region is essentially diamond-shaped.The simulated delamination region is in good agreement with the experimental data.It is found that the delamination region increases with the compression modulus along the fiber direction.The delamination region increases when the shear strength between the fabric layers decreases;However,it is little influenced by the normal strength.The delamination region of the front face of the laminate is little influenced by the failure strain of the material and the initial velocity of the bullet.The delamination region of the back face increases with the failure strain and decreases with the initial velocity.

关 键 词：proof PROCESS MODULUS 

分 类 号：TJ410[兵器科学与技术—火炮、自动武器与弹药工程]