双破片侵彻耦合载荷对容器壁面的毁伤研究
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摘要
为研究双破片撞击充液容器引起的液压水锤现象对壁面的毁伤,利用有限元分析软件ANSYS/LS-DYNA对该过程进行数值模拟,并进行试验验证。分析破片撞击动能、间距、作用时间间隔对容器壁面毁伤的影响。结果表明:破片撞击充液容器的动能越大,壁面变形越大;当壁面出现裂纹时,变形量增长速度加快;破片撞击点间距对容器前壁面的变形影响较小,对后壁面影响较大;破片撞击点间距越小,壁面变形量越大;壁面变形量随着两破片撞击时间间隔的增大而减小,但时间间隔增大至0. 10 ms时对壁面变形将无影响。
To study the damage of front and rear walls caused by double fragments impacting a liquidfilled vessel,ANSYS/LS-DYNA software is used to simulate and verify the damage process through experiments. The effects of kinetic energy,spacing and acting time interval of fragments on the damage of the walls are analyzed. The results show that the deformation of the walls increases with the increase in fragment kinetic energy,and when the wall cracks,the deformation changes faster. Fragment impact point spacing has less influence on the fore-wall and has a greater influence on the rear-wall deformation;and the smaller the fragment spacing is,the greater the wall deformation is. The wall deformation decreases with the increase in the impacting time interval of double fragments; and when the tine interval increases to 0. 10 ms,it has no influence on the wall deformation.
To study the damage of front and rear walls caused by double fragments impacting a liquidfilled vessel,ANSYS/LS-DYNA software is used to simulate and verify the damage process through experiments. The effects of kinetic energy,spacing and acting time interval of fragments on the damage of the walls are analyzed. The results show that the deformation of the walls increases with the increase in fragment kinetic energy,and when the wall cracks,the deformation changes faster. Fragment impact point spacing has less influence on the fore-wall and has a greater influence on the rear-wall deformation;and the smaller the fragment spacing is,the greater the wall deformation is. The wall deformation decreases with the increase in the impacting time interval of double fragments; and when the tine interval increases to 0. 10 ms,it has no influence on the wall deformation.
引文
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[17]孔祥韶,吴卫国,李俊,等.爆炸破片对防护液舱的穿透效应[J].爆炸与冲击,2013,33(5):471-478.KONG X S,WU W G,LI J,et al. Effects of explosion fragments penetrating defensive liquid-filled cabins[J]. Explosion and Shock Waves,2013,33(5):471-478.(in Chinese)
[18]李营,张玮,杜志鹏,等.球形弹体打击作用下宽距水间隔铝板的动态响应特性[J].振动与冲击,2018,37(1):106-110.LI Y,ZHANG W,DU Z P,et al. Dynamic responses of wide interval water-spacing aluminum plates under sphere projectile impact[J]. Journal of Vibration and Shock,2018,37(1):106-110.(in Chinese)
[2] KAPPEL L G. Hydraulic ram shock phase effects on fuel cell survivability[D]. Monterey,CA,US:Naval Postgraduate School,1974.
[3] PAGE B D. Fuel cell entry wall response to hydraulic ram[D].Monterey,CA,US:Naval Postgraduate School,1975.
[4] PATTERSON J W. Fuel cell pressure loading during hydraulic ram[D]. Monterey,CA,US:Naval Postgraduate School,1975.
[5] BALL R E,POWER H L,FUHS A E. Fuel tank wall response to hydraulic ram during the shock phase[J]. Journal of Aircraft,1973,10(9):571-572.
[6] LUNDSTROM E A. Structural response of flat panels to hydraulic ram pressure loading[R]. China Lake,CA,US:Naval Weapons Center,1988.
[7] FAHERENKROG S L. A study of the crack damage in fuel-filled tank walls due to ballistic penetrators[D]. Monterey,CA,US:Naval Postgraduate School,1976.
[8] ROSENBERG Z,BLESS S J,GALLAGHER J P. A model for hydrodynamic ram failure based on fracture mechanics analysis[J]. International Journal of Impact Engineering,1987,6(1):51-61.
[9] VARAS D,LOPEZ-PUENTE J,ZAERA R. Experimental analysis of fluid-filled aluminium tubes subjected to high-velocity impact[J]. International Journal of Impact Engineering,2009,36(1):81-91.
[10] VARAS D,LOPEZ-PUENTE J,ZAERA R. Numerical analysis of the hydrodynamic ram phenomenon in aircraft fuel tanks[J].AIAA Journal,2012,50(7):1621-1630.
[11] VARAS D,LOPEZ-PUENTE J,ZAERA R. Numerical study of the effects of metallic plates in the attenuation of the HRAM phenomenon[J]. Applied Mechanics&Materials,2014,566(8):511-516.
[12] KWON Y W,YANG K,ADAMS C. Modeling and simulation of high-velocity projectile impact on storage tank[J]. Journal of Pressure Vessel Technology,2016,138(4):041303.
[13] KWON Y,YUN K. Numerical parametric study of hydrodynamic ram[J]. International Journal of Multiphysics,2017,11(1):15-47.
[14] NISHIDA M,TANAKA K. Experimental study of perforation and cracking of water-filled aluminum tubes impacted by steel spheres[J]. International Journal of Impact Engineering, 2006,32(12):2000-2016.
[15]王海福,汪秀明,张晓新,等.高速破片撞击液箱结构毁伤效应数值模拟[J].北京理工大学学报,2015,35(增刊2):161-164.WANG H F,WANG X M,ZHANG X X,et al. Numerical simulation of damage to fluid filled structures impacted by high-velocity fragment[J]. Transactions of Beijing Institute of Technology,2015,35(S2):161-164.(in Chinese)
[16]李典,朱锡,侯海量.高速杆式弹侵彻下蓄水结构防护效能数值分析[J].海军工程大学学报,2015,27(4):21-25,30.LI D,ZHU X,HOU H L. Numerical analysis of protective efficacy of water-filled structure subjected to high velocity long rod projectile penetration[J]. Journal of Naval University of Engineering,2015,27(4):21-25,30.(in Chinese)
[17]孔祥韶,吴卫国,李俊,等.爆炸破片对防护液舱的穿透效应[J].爆炸与冲击,2013,33(5):471-478.KONG X S,WU W G,LI J,et al. Effects of explosion fragments penetrating defensive liquid-filled cabins[J]. Explosion and Shock Waves,2013,33(5):471-478.(in Chinese)
[18]李营,张玮,杜志鹏,等.球形弹体打击作用下宽距水间隔铝板的动态响应特性[J].振动与冲击,2018,37(1):106-110.LI Y,ZHANG W,DU Z P,et al. Dynamic responses of wide interval water-spacing aluminum plates under sphere projectile impact[J]. Journal of Vibration and Shock,2018,37(1):106-110.(in Chinese)
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