高速弹丸冲击下复合材料层合板损伤特性仿真研究
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摘要
为研究复合材料层合板在高速冲击下的损伤特性,通过有限元仿真方法,分析3种不同厚度的Kevlar纤维层合板及UHMWPE层合板在圆柱体、球体、立方体3种弹丸冲击作用下的变形破坏情况,得到3种层合板主要的总体变形破坏模式,并将结果与试验现象进行对比,明确弹丸初始动能与层合板总体变形破坏模式之间的关系。结果表明:高速弹丸冲击作用下,复合材料层合板的宏观破坏模式有整体弯曲变形、拉伸分层破坏和局部穿透破坏;对于UHMWPE材料,弹丸速度处于总体弯曲变形区与拉伸分层破坏区分界线时的吸能约为弹道极限时吸能的一半,而Kevlar纤维的吸能将超过弹道极限吸能的一半;当层合板受到圆柱体或立方体的冲击时,最大吸能将发生在弹道极限时,而球体的最大吸能发生在弹丸速度大于弹道极限时。
In order to research the damage characteristic of composite laminates under high-velocity projectile impact,the deformation and damage of three different kinds of thickness of Kevlar laminates and UHMWPE laminates under the cube,cylinder,sphere projectile impact were analyzed by finite element simulation. The failure mode was compared with the experimental results. The relationship between the initial kinetic energy of projectile and the overall deformation of laminates was illustrated. The results show that the overall deformation of composite laminates under the impact of high-velocity projectile can be divided into following three types,namely overall bending,tensile-delamination damage and local penetration. When the velocity of projectile is at the boundary between overall bending and tensile-delamination damage,the energy absorption of the UHMWPE laminates is the half of the energy when projectile is at ballistic limit velocity,and this energy is greater than the half of the energy when projectile is at ballistic limit velocity for Kevlar laminates. Laminates will absorb the most energy when impacted by cylinder or cubic at ballistic limit velocity or sphere at a velocity higher than ballistic limit.
In order to research the damage characteristic of composite laminates under high-velocity projectile impact,the deformation and damage of three different kinds of thickness of Kevlar laminates and UHMWPE laminates under the cube,cylinder,sphere projectile impact were analyzed by finite element simulation. The failure mode was compared with the experimental results. The relationship between the initial kinetic energy of projectile and the overall deformation of laminates was illustrated. The results show that the overall deformation of composite laminates under the impact of high-velocity projectile can be divided into following three types,namely overall bending,tensile-delamination damage and local penetration. When the velocity of projectile is at the boundary between overall bending and tensile-delamination damage,the energy absorption of the UHMWPE laminates is the half of the energy when projectile is at ballistic limit velocity,and this energy is greater than the half of the energy when projectile is at ballistic limit velocity for Kevlar laminates. Laminates will absorb the most energy when impacted by cylinder or cubic at ballistic limit velocity or sphere at a velocity higher than ballistic limit.
引文
[1]张佐光.功能复合材料[M].北京:化学工业出版社,2004:279-302.
[2]ZHU G,GOLDSMITH W,DHARAN C K H.Penetration of laminates kevlar by projectilesΙ:experiment investigation[J].Int J Solids Structure,1992(4):399-420.
[3]王晓强,朱锡,梅志远,等.超高分子量聚乙烯纤维增强层合厚板抗弹性能试验研究[J].爆炸与冲击,2009,29(1):29-34.
[4]秦建兵,韩志军,刘云雁,等.复合材料层合板侵彻行为的研究[J].振动与冲击,2013,32(24):122-126.
[5]MINES R A W,ROACH A M,JONES N.High velocity perfora.tion behavior of polymer composite laminates[J].International Journal of Impact Engineering,1999,22:561-588.
[6]MORYE S S,HINE P J,DUCKETT R E,et al.Modelling of the energy absorption by polymer composites upon ballistic im.pact[J].Composite Science and Technology,2000,60:2631-2642.
[7]WEN H M.Predicting the penetration and perforation of FRPlaminates struck normally by projectiles with different nose shapes[J].Composite Structures,2000,49:321-329.
[8]陈长海,朱锡,王俊森,等.高速钝头弹侵彻中厚高分子聚乙烯纤维增强复合塑料层合板的机理[J].复合材料学报,2013,30(5):14-23.
[9]胡年明,朱锡,侯海量,等.高速弹丸侵彻下高分子聚乙烯层合板的弹道极限估算方法[J].中国舰船研究,2014,9(4):55-62.
[10]LOIKKANEN M,PRAVEEN G,POWELL D.Simulation of ballistic impact on composite panels[C]//10th International LS.DYNA Users Conference.Michigan:Livermore Software Technology Corp,2008(9):1-12.
[2]ZHU G,GOLDSMITH W,DHARAN C K H.Penetration of laminates kevlar by projectilesΙ:experiment investigation[J].Int J Solids Structure,1992(4):399-420.
[3]王晓强,朱锡,梅志远,等.超高分子量聚乙烯纤维增强层合厚板抗弹性能试验研究[J].爆炸与冲击,2009,29(1):29-34.
[4]秦建兵,韩志军,刘云雁,等.复合材料层合板侵彻行为的研究[J].振动与冲击,2013,32(24):122-126.
[5]MINES R A W,ROACH A M,JONES N.High velocity perfora.tion behavior of polymer composite laminates[J].International Journal of Impact Engineering,1999,22:561-588.
[6]MORYE S S,HINE P J,DUCKETT R E,et al.Modelling of the energy absorption by polymer composites upon ballistic im.pact[J].Composite Science and Technology,2000,60:2631-2642.
[7]WEN H M.Predicting the penetration and perforation of FRPlaminates struck normally by projectiles with different nose shapes[J].Composite Structures,2000,49:321-329.
[8]陈长海,朱锡,王俊森,等.高速钝头弹侵彻中厚高分子聚乙烯纤维增强复合塑料层合板的机理[J].复合材料学报,2013,30(5):14-23.
[9]胡年明,朱锡,侯海量,等.高速弹丸侵彻下高分子聚乙烯层合板的弹道极限估算方法[J].中国舰船研究,2014,9(4):55-62.
[10]LOIKKANEN M,PRAVEEN G,POWELL D.Simulation of ballistic impact on composite panels[C]//10th International LS.DYNA Users Conference.Michigan:Livermore Software Technology Corp,2008(9):1-12.