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含能材料  2015 

燃料抛撒的初始速率与结构动态响应数值模拟

DOI: 10.11943/j.issn.1006-9941.2015.04.003

Keywords: 抛撒速率 壳体应力 数值模拟

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Abstract:

为研究扇形结构燃料抛撒特性,利用LS-DYNA程序,对中心抛撒药驱动燃料抛撒和壳体破坏过程进行了数值模拟,并与试验结果进行了对比。得到了燃料抛撒速率随时间变化的规律,以及抛撒药类型及其位置、刻槽间距与深度对燃料最大速率和结构响应的影响。结果表明:燃料最大速率值出现在180°方向; 而0°方向最早出现最大速率。与RDX相比,高爆速、高爆压的中心抛撒药HMX导致壳体破坏程度的加剧和燃料的最大抛撒速率平均下降18%。对于抛撒药的中心位置,过于偏离横截面形心的设置方式将引起燃料抛撒速率的降低和壳体的横向断裂。当刻槽间距为40 mm、刻槽深度为2 mm时,模拟结果显示壳体应力集中现象较少,且燃料在180°方向的最大抛撒速率为283 m·s-1

References

[1]  Stefanski K, Lewandowski D, Dygdala R S, et al.Explosive formation and spreading of water-spray cloud-experimental development and model analyses[J].Central European Journal of Energetic Materials, 2009,6(3-4): 291-302.
[2]  刘锋.爆炸水雾降除爆破拆除粉尘的研究[D].淮南: 安徽理工大学, 2011.LIU Feng.Research on blasting water mist reducing dust resulting from blasting demolition[D].Huainan: Anhui University of Science and Technology, 2011.
[3]  白春华, 梁慧敏, 李建平, 等.云雾爆轰[M].北京: 科学出版社, 2012: 1-6.
[4]  Gardner D R, Glass M W.A Coupled near-field dispersal model for fuel-air-explosives[R].Sandia National Laboratories Report, SAND90-0687,1990.
[5]  Glass W M.Far-field Dispersal modeling for fuel-air-explosives[R].Sandia National Laboratories Report, SAND90-0528,1990.
[6]  Singh S K, Singh V.Extended near-field modeling and droplet size distribution for fuel-air explosive warhead[J].Defence Science Journal, 2001,51(3): 303-314.
[7]  丁珏, 刘家骢, 彭金华.液体燃料爆炸抛撒初期的一维数值模拟[J].弹道学报, 1999,11(3): 29-33.DING Jue, LIU Jia-cong, PENG Jin-hua.One-dimensional numerical simulation for the initial regime of liquid fuel explosive dispersal[J].Journal o f Ballistics, 1999,11(3): 29-33.
[8]  丁珏, 刘家骢.液体燃料爆炸抛撒和FAE形成过程的数值模拟[J].南京理工大学学报, 2000,24(2): 168-171.DING Jue, LIU Jia-cong.Numerical simulation on the process of explosive dispersal for forming FAE cloud[J].Journal of Nanjing University of Science and Technology, 2000,24(2): 168-171.
[9]  薛社生.液体燃料的爆炸抛撒研究[D].南京: 南京理工大学, 1997.XUE She-sheng.Investigation of explosion dispersion for liquid fuels[D].Nanjing: Nanjing University of Science and Technology, 1997.
[10]  惠君明, 张陶, 郭学永.FAE装置参数对燃料抛撒与爆炸威力影响的实验研究[J].高压物理学报, 2004,18(2): 103-108.HUI Jun-ming, ZHANG Tao, GUO Xue-yong.Experimental study on the influence of device parameters of FAE to fuel dispersion and explosive power[J].Chinese Journal of High Pressure Physics, 2004,18(2): 103-108.
[11]  郭学永.云爆战斗部基础技术研究[D].南京: 南京理工大学, 2006.GUO Xue-yong.Basic technical research on fuel air explosive warhead[D].Nanjing: Nanjing University of Science and Technology, 2006.
[12]  李裕春, 时党勇, 赵远.ANSYS 11.0/LS-DYNA基础理论与工程实践[M].北京: 中国水利水电出版社, 2008: 280-289.
[13]  白金泽.LS-DYNA3D基础理论与实例分析[M].北京: 科学出版社, 2005: 89-100.
[14]  张奇, 郭彦懿, 白春华, 等.中心药量对燃料的抛散作用[J].火炸药学报, 2001 (1): 17-19.ZHANG Qi, GUO Yan-yi, BAI Chun-hua, et al.Dispersal affection of center high explosive charge to fuel[J].Chinese Journal of Explosives & Propellants.2001 (1): 17-19.
[15]  薛社生, 刘家骢, 彭金华.液体燃料爆炸抛撒过程分析[J].南京理工大学学报, 1998,22(1): 34-38.XUE She-sheng, LIU Jia-cong, PENG Jin-hua.Analysis of explosive dispersion for liquid fuel[J].Journal of Nanjing University of Science and Technology, 1998,22(1): 34-38.
[16]  薛社生, 刘家骢, 秦承森, 等.燃料爆炸抛撒成雾的实验与数值研究[J].爆炸与冲击, 2001,21(4): 272-276.XUE She-sheng, LIU Jia-cong, QIN Cheng-sen, et al.Experimental and numerical investigation on explosive dispersal and cloud forming[J].Explosion and Shock Waves, 2001,21(4): 272-276.
[17]  蒋治海, 龙新平, 韩勇, 等.炸药爆炸驱动壳体破裂及液体喷射过程试验研究[J].含能材料, 2011,19(3): 321-324.JIANG Zhi-hai,LONG Xin-ping,HAN Yong, et al.Experimental studies on shell fracturing and jet forming and developing process driven by detonation[J].Chinese Journal of Energetic Materials(Hanneng Cailiao), 2011,19(3): 321-324.
[18]  高重阳.内部爆炸载荷下柱壳结构破裂问题的研究[D].北京: 清华大学, 2000.GAO Chong-yang.Research on the rupture of cylindrical shell structure under internal explosive loading[D].Beijing: Tsinghua University , 2000.
[19]  Chester R H, Rodney F R.Fracture behavior of tubular bombs[J].Journal of Applied Physics, 1968,39(3): 1856-1862.
[20]  周保顺, 王少龙, 罗永锋, 等.壳体对燃料近区抛撒速度影响的数值模拟[J].火炸药学报, 2010,33(2): 53-56.ZHOU Bao-shun, WANG Shao-long, LUO Yong-feng, et al.Numerical simulation on influence of shell on fuel near-field dispersal velocity[J].Chinese Journal of Explosives & Propellants, 2010,33(2): 53-56.
[21]  张奇, 覃彬, 白春华, 等.中心装药对FAE燃料成雾特性影响的试验分析[J].含能材料, 2007,15(5): 447-450.ZHANG Qi, QIN Bin, BAI Chun-hua, et al.Effection of total energy of center explosive charge on fuel dispersal characteristics feature[J].Chinese Journal of Energetic Materials(Hanneng Cailiao), 2007,15(5): 447-450.
[22]  薛社生, 刘家骢, 彭金华.液体燃料爆炸抛撒的近场阶段研究[J].南京理工大学学报, 1997,21(4): 333-336.XUE She-sheng, LIU Jia-cong, PENG Jin-hua.The Solution of near-field dispersion for liquid fuel FAE[J].Journal of Nanjing University of Science and Technology, 1997,21(4): 333-336.
[23]  张奇, 白春华, 刘庆明, 等.不耦合装药爆炸作用下燃料空气炸药的近区抛撒[J] .弹道学报, 2000,12( 2): 22-25.ZHANG Qi, BAI Chun-hua, LIU Qing-ming, et al.Near field dispersal of FAE fuel under load of uncoupling charge in center pipe[J].Journal of Ballistics, 2000,12(2): 22-25.
[24]  Gardner D R.Near-field Dispersal Modeling for Liquid Fuel-air-explosive[R].Sandia National Laboratories Report, SAND90-0686,1990.
[25]  张宝钅平, 张庆明, 黄风雷.爆轰物理学[M].北京: 兵器工业出版社, 2001: 160.
[26]  ZHANG Qi, BAI Chun-hua, LIU Qing-ming, et al.Study on near field dispersal of fuel air explosive[J].Journal of Beijing Institute of Technology, 1999,8(2): 113-118.

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