预应力对陶瓷抗侵彻性能影响规律的数值模拟
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摘要
为研究预应力陶瓷的抗侵彻性能,利用AUTODYN仿真软件模拟了对SiC陶瓷施加预应力的过程,并开展了长杆弹以不同速度侵彻预应力陶瓷的数值仿真研究,确定了预应力陶瓷的抗侵彻性能。通过对比分析,得到了不同载荷下陶瓷内部的应力分布状态,以及陶瓷抗侵彻性能与预应力的关系。结果表明:对陶瓷施加预应力可以有效提高其抗侵彻能力;但随着加载预应力的进一步提高,即当陶瓷中心部位预应力大于112MPa时,陶瓷的抗侵彻能力反而下降,陶瓷加载的预应力与其抗侵彻性能之间存在最佳匹配关系。
In this work we studied the processes of applying pre-stress on SiC ceramics by using the finite element software AUTODYN.We established a model of long-rod projectile of different velocities penetrating ceramics with different pre-stress values to investigate the ballistic performance of the pre-stress ceramic,and obtained the stress distributions in the ceramic under different loading conditions through the comparison and analysis of the results,as well as the relation of different pre-stress and ballistic performance of the ceramic.The simulated results show that the appropriate pre-stress can improve the ballistic performance of ceramic,but the ballistic performance of ceramic is reduced when the pre-stress value is greater than 112 MPa,and that there exists a best matching relationship between the pre-stress value and the ballistic performance of the ceramics.
In this work we studied the processes of applying pre-stress on SiC ceramics by using the finite element software AUTODYN.We established a model of long-rod projectile of different velocities penetrating ceramics with different pre-stress values to investigate the ballistic performance of the pre-stress ceramic,and obtained the stress distributions in the ceramic under different loading conditions through the comparison and analysis of the results,as well as the relation of different pre-stress and ballistic performance of the ceramic.The simulated results show that the appropriate pre-stress can improve the ballistic performance of ceramic,but the ballistic performance of ceramic is reduced when the pre-stress value is greater than 112 MPa,and that there exists a best matching relationship between the pre-stress value and the ballistic performance of the ceramics.
引文
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[16]LUNDBERG P,RENSTRM R,LUNDBERG B.Impact of conical tungsten projectiles on flat silicon carbide targets:transition from interface defeat to penetration[J].International Journal of Impact Engineering,2006,32(11):1842-1856.
[17]LEE J K.Analysis of multi-layered materials under high velocity impact using CTH[D].Air Force Institute of Technology Wright-Patterson AFB OH,Graduate School of Engineering and Management,2008.
[18]JOHNSON G R,COOK W H.Fracture characteristics of three metals subjected to various strains,strain rates,temperatures and pressures[J].Engineering Fracture Mechanics,1985,21(1):31-48.
[19]HOLMQUIST T J,JOHNSON G R.Modeling prestressed ceramic and its effect on ballistic performance[J].International Journal of Impact Engineering,2005,31(2):113-127.
[20]SERJOUEI A,GOUR G,ZHANG X,et al.On improving ballistic limit of bi-layer ceramic/metal armor[J].International Journal of Impact Engineering,2017,105:54-67.
[2]高举贤,吴玉炎,白蓉裳,等.陶瓷防弹性能的研究[J].弹箭与制导学报,1986(2):7-17.
[3]王为民,傅正义,张金咏,等.陶瓷材料抗超高速弹丸的侵彻过程研究[C]//中国空间科学学会空间材料专业委员会2012学术交流会议论文(摘要)集,2012.
[4]LASALVIA J C,MCCAULEY J W.Inelastic deformation mechanisms and damage in structural ceramics subjected to high-velocity impact[J].International Journal of Applied Ceramic Technology,2010,7(5):595-605.
[5]SHERMAN D.Impact failure mechanisms in alumina tiles on finite thickness support and the effect of confinement[J].International Journal of Impact Engineering,2000,24(3):313-328.
[6]MEYER H W,KLEPONIS D S.Modeling the high strain rate behavior of titanium undergoing ballistic impact and penetration[J].International Journal of Impact Engineering,2001,26(1):509-521.
[7]李平,李大红,宁建国,等.Al2O3陶瓷复合靶抗长杆弹侵彻性能和机理实验研究[J].爆炸与冲击,2003,23(4):289-294.LI P,LI D H,NING J G,et al.Experimental study on the ballistic performance and mechanism of confined ceramic targets against long rod penetrators[J].Explosion and Shock Waves,2003,23(4):289-294.
[8]井玉安,果世驹,韩静涛.钢/Al2O3陶瓷/钢轻型复合装甲板抗弹性能[J].北京科技大学学报,2007,29(4):402-407.JING Y A,GUO S J,HAN J T.Ballistic property of steel/ceramic/steel composite armor[J].Journal of University of Science and Technology Beijing,2007,29(4):402-407.
[9]CHI R,SERJOUEI A,SRIDHAR I,et al.Pre-stress effect on confined ceramic armor ballistic performance[J].International Journal of Impact Engineering,2015,84:159-170.
[10]HOLMQUIST T J,JOHNSON G R.Response of silicon carbide to high velocity impact[J].Journal of Applied Physics,2002,91(9):5858-5866.
[11]谈梦婷,张先锋,何勇,等.长杆弹撞击装甲陶瓷的界面击溃效应数值模拟[J].兵工学报,2016,37(4):627-634.TAN M T,ZHANG X F,HE Y,et al.Numerical simulation on interface defeat of ceramic armor impacted by longrod projectile[J].Acta Armamentarii,2016,37(4):627-634.
[12]ZHU D,YAN S,LI B.Single-grit modeling and simulation of crack initiation and propagation in SiC grinding using maximum undeformed chip thickness[J].Computational Materials Science,2014,92:13-21.
[13]HOLMQUIST T J,JOHNSON G R.Characterization and evaluation of silicon carbide for high-velocity impact[J].Journal of Applied Physics,2005,97(9):093502.
[14]CRONIN D S,BUI K,KAUFMANN C,et al.Implementation and validation of the Johnson-Holmquist ceramic material model in LS-DYNA[C]//Proceedings of 4th European LS-DYNA Users Conference.Ontario,Canada:University of Waterloo,2003,1:47-60.
[15]JOHNSON G R,COOK W H.A constitutive model and data for metals subjected to large strains,high strain rates and high temperatures[C]//Proceedings of the 7th International Symposium on Ballistics,1983,21:541-547.
[16]LUNDBERG P,RENSTRM R,LUNDBERG B.Impact of conical tungsten projectiles on flat silicon carbide targets:transition from interface defeat to penetration[J].International Journal of Impact Engineering,2006,32(11):1842-1856.
[17]LEE J K.Analysis of multi-layered materials under high velocity impact using CTH[D].Air Force Institute of Technology Wright-Patterson AFB OH,Graduate School of Engineering and Management,2008.
[18]JOHNSON G R,COOK W H.Fracture characteristics of three metals subjected to various strains,strain rates,temperatures and pressures[J].Engineering Fracture Mechanics,1985,21(1):31-48.
[19]HOLMQUIST T J,JOHNSON G R.Modeling prestressed ceramic and its effect on ballistic performance[J].International Journal of Impact Engineering,2005,31(2):113-127.
[20]SERJOUEI A,GOUR G,ZHANG X,et al.On improving ballistic limit of bi-layer ceramic/metal armor[J].International Journal of Impact Engineering,2017,105:54-67.