全部 标题 作者
关键词 摘要

OALib Journal期刊
ISSN: 2333-9721
费用:99美元

查看量下载量

相关文章

更多...
含能材料  2011 

高超音速侵彻混凝土过程中侵彻弹体装药塑性安定性分析

DOI: 10.3969/j.issn.1006-9941.2011.06.024

Keywords: 侵彻动力学,装药安定性,动摩擦

Full-Text   Cite this paper   Add to My Lib

Abstract:

尽管侵彻动力学研究有大量的研究报道,但是主要集中于弹体结构响应和侵彻能力研究,涉及侵彻体内部装药安定性的研究较少,而且没有形成系统的装药安定性理论分析方法。本文根据弹体内部装药的塑性应力-应变本构关系,首次提出了利用弹体结构与内部装药相对位移、摩擦功、热力学原理和热点理论推导的装药热安定性结构设计塑性理论分析方法。研究过程中从空穴膨胀理论出发确定侵彻弹体的响应函数,结合牛顿第二定律,采用有限差分技术获得弹体侵彻过程的轴向阻力和惯性过载。以弹体惯性过载作为装药安定性响应的输入,通过理论分析确定弹体壳体与内部装药界面热影响区内炸药温度上升情况,分析表明:内部装药过载系数、装药长度是影响装药安定性的重要因素,而且热影响区内炸药温度上升沿装药轴线呈现非线性变化。此外,如果装药直径给定,通过计算可以确定热影响区内炸药温度上升的最大值及其发生位置。理论分析结果给出了能够定量描述装药安定性结构设计的物理参数和几何参数,可以作为装药安定性结构设计的重要依据和参考。

References

[1]  James Hart, Joint super-sonic cruise missile [OL]. www.fas.org. 
[2]  Gomez J T, Shukla A. Multiple impact penetration of semi-infinite concrete [J]. Int J Impact Eng, 2001, 25: 965-979.
[3]  Forrestal M J, Frew D J, Hicherson J P, et al. Penetration of concrete targets with acceleration-time measures [J]. Int J Impact Eng, 2003, 28: 479-497.
[4]  Bishop R F, Hill R, and Mott N F. The theory of indentation and hardness tests[C]∥Proceedings of Physical Society of London, 1945, 57: 147-159.
[5]  Hopkins H G. Dynamic expansion of spherical cavities in metals [C]∥ Progress in Solid Mech, Pergamon Press, Oxford, England, 1960, 1: 84-164.
[6]  皮爱国,黄风雷. 大长细比弹体斜侵彻混凝土靶的动力学响应[J]. 爆炸与冲击, 2007, 27(4): 331-337. PI Ai-guo, HUANG Feng-lei. Dynamic response of tilt penetration with large L/D ratio [J]. Explosive and Shock Wave, 2007, 27(4): 331-337.
[7]  宋顺成,王庭辉,才鸿年,等. 钢制弹丸冲击混凝土时绝热剪切局部化的数值计算[J] . 爆炸与冲击, 2007, 27(3): 246-250. SONG Sun-cheng, WANG Ting-hui, CAI Hong-nian, et al. Adiabatic shear numerical simulation of steel projectile impacting into concrete targets[J]. Explosive and Shock Wave, 2007, 27(3): 246-250.
[8]  周宁,任辉启,沈兆武,等. 侵彻钢筋混凝土过程中弹丸过载特性的实验研究[J]. 实验力学, 2005, 21(5): 572-578. ZHOU Ning, REN Hui-qi, SHEN Zhao-wu, et al. Study on penetration of concrete targets by ogive-nose steel projectile[J]. Chinese Journal of High Pressure Physics, 2007, 21(3): 242-248. 
[9]  王成华,陈佩银,徐孝诚.侵彻过载实测数据的滤波及弹体侵彻刚体过载的确定[J].爆炸与冲击,2007,27(5):416-419. WANG Chen-hua,CHEN Pei-yin,XU Xiao-chen. Penetration overloads determination and experimental data process of rigid projectile [J]. Explosive and Shock Wave, 2007,27(5): 416-419.
[10]  Nash. Opnav high speed strike initiative [OL]. www.fas.org.
[11]  Woolf A F. Conventional warheads for long-range ballistic missiles: background and issues for congressn[OL]. www.fas.org.
[12]  Tate A. A theory for the deceleration of long rods after impact [J]. J Mech Phys Solids, 1967, Vol. 15: 287.
[13]  Forrestal M J, Luk V K. Dynamic spherical cavity-expansion in a compressible elastic-plastic solid [J]. J Appl Mech,1988,55: 1-5.
[14]  Rosenberg Z, Marmor E, and Mayseless M. On the hydrodynamic theory of long-rod penetration [J]. Int J Impact Eng, 1990, 10: 483-486.
[15]  Jerome D, Schultz H J, Johnson D. Recent impact and penetration test[C]∥Proceedings of the workshop on thermo-mechanics of impact and penetration, 2000: 158-163.
[16]  Martineau R L, Michael B P, and Thomas D. Penetration of HSLA-100 steel with tungsten carbide spheres at striking velocities between 0.8 and 2.5km/s [J], Int J Impact Eng, 2004, 30: 50.
[17]  Wilkins M L. Mechanics of penetration and perforation [J]. Int J Eng Sci, 1978, 16(11): 793-807.
[18]  Hill R. Cavitation and the influence of head shape in attack of thick targets by non-deforming projectiles [J] . J Mech Phys Solids, 1980, 28: 249-263.
[19]  Batra R C. Effect of nose shape and strain-hardening on steady state penetration of viscoplastic targets [CP]. In Computational Plasticity, Models, Software and Applications, Swansea: Pineridge Press, 1987: 463-475.
[20]  Charles E A, Walker J D, Stephan J B, et al. On the velocity dependence of the L/D effect for long-rod penetrators [J]. Int J Impact Eng, 1995, 17: 13-24.
[21]  Forrestal M J, Frew D J, Hanchak S J, et al. Penetration of grout and concrete targets with ogive-nose steel projectiles [J]. Int J Impact Eng, 1996, 18(5): 465-476.
[22]  Frew D J, Hanchak S J, Green M L, et al. Penetration of concrete targets with ogive-nose steel rods [J]. Int J Impact Eng, 1998, 21(6): 489-497.
[23]  张旭,谷岩,张远平,等.TATB基PBX的快速烤燃实验与数值模拟[J]. 含能材料, 2010,18(5): 551-557. ZHANG Xu, GU Yan, ZHANG Yuan-ping, et al. Numerical Simulation and Experimental Study of Fast Cook-off of TATB-based PBX Explosive[J]. Chinese Journal of Energetic Materials (Hanneng Cailiao), 2010,18(5): 551-557.
[24]  唐桂芳,王晓峰,李巍. 浇注PBX的低易损性能研究[J]. 含能材料,2003,11(3): 163-165. TANG Gui-fang, WANG Xiao-feng, LI Wei. Low Damage property of PBX Explosive [J]. Chinese Journal of Energetic Materials (Hanneng Cailiao), 2003,11(3): 163-165.

Full-Text

Contact Us

service@oalib.com

QQ:3279437679

WhatsApp +8615387084133