高过载下延期装置失效机理及加固技术研究
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摘要
本文应用Hopkinson压杆实验装置,对压装B/BaCrO_1硼系延期药的延期装置进行了高加速度过载加载实验研究,分析了高加速度过载加载时延期药的抛射机理,提出两种提高延期装置抗过载加速度能力的加固方法。研究的具体内容如下:
     应用Hopkinson压杆实验装置对延期装置进行高加速度过载加载实验。实验结果表明,在高加速度过载加载条件下从延期装置端口抛射出部分延期药颗粒,且延期药抛射量随过载加速度的增大而增加。根据实验现象及实验数据分析了延期药的抛射机理。
     本文提出通过改变延期装置壳体尺寸及增加外部缓冲热垫片两种方法,对高加速度过载加载下的延期装置进行加固。实验结果表明:增加管壳直径能够明显减小过载加速度对延期药燃速造成的影响,而且延期药抛射量也明显减小;改变管壳长度对提高延期装置抗过载能力的作用很小;在延期装置两端加垫纸垫可以明显减小延期药的抛射量,而且其加固效果优于在延期装置一端加垫纸垫。
     应用ANSYS/LS-DYNA软件仿真模拟了管壳尺寸改变前后及加垫纸垫前后延期装置高加速度过载加载过程。仿真模拟结果表明高加速度过载加载时延期药有抛射现象,管壳加固和纸垫加固模拟结果与实验结果基本一致。
A Hopkinson pressure bar technique was used to test the burning performance of boron type delay charge pressed into the delay unit under overload with a high acceleration in this dissertation, in which the theoretical invalidation of the delay unit was analyzed, and two methods were used to improve the antioverload performance. The main works and achievements are presented as follows:
    The delay unit was tested under overload with a high acceleration. The results indicated that a portion of the delay charge was projected from the end of the delay unit during the course of the experiment, and the projecting quantity increased with the acceleration. The projecting mechanism was analyzed on the basis of the phenomena and data.
    Two methods, namely changing the dimension of the delay unit and adding exterior buffer spacers, were utilized to reinforce the delay unit under overload with a high acceleration. Increasing the diameter of the shell tube decreased remarkably the effect of high acceleration on burning rate of the delay charge and the projecting quantity. Change in the length of the shell tube had very little effect on the antioverload performance. Adding paper spacers at the ends of the delay unit decreased remarkably the projecting quantity and had better reinforcing effect than adding a paper spacer at only one end of it.
    Before/after changing the dimension of the delay unit or adding exterior buffer spacers, the burning process of boron type delay charge pressed into the delay unit under overload with a high acceleration was simulated with ANSYS/LS-DYNA. The simulation indicated that the delay charge was projected under overload with a high acceleration, and accorded with the experimental data.
引文
1 中国军事百科全书[M].火炸药、弹药分册.国防科学技术工业委员会科学技术部主编.北京:军事科学出版社,1991
    2 蔡瑞娇.火工品设计原理[M].北京:北京理工大学出版社,1999
    3 马小青,韩峰.高速碰撞动力学[M].北京:国防工业出版,1998,40-46
    4 乔纳斯A·朱卡斯等著,张志云等译.碰撞动力学[M].北京:兵器工业出版社,1987,182-323
    5 张庆明,黄风雷.超高速碰撞动力学引论[M].北京:科学出版社,2000,103~110
    6 李洪涛,黄细霞.高速弹丸撞击1420铝合金过程数值模拟[J].材料科学与工艺.2001,9(1):56-58
    7 M.W. Greenaway. Measurement of ingtergranular stress and porosity during dynamic compaction of porous beds of cyclotetramethylene teranitramine. Journal of applied physics 97,093521-1(2005)
    8 皮爱如,沈兆武.土壤冲击性能的实验研究[J].振动与冲击.2003,3:1-315
    9 Kolsky, H. An Investigation of the Mechanical Properties of Materials at Very High Rates of Loading, Proc. Roy. Soc. Lon. B. 1949, 62:676-700
    10 张学舜,沈瑞琪.火工品动态著靶模拟仿真技术研究[J].火工品.2003,(4):1-4.
    11 张学舜,沈瑞琪等.雷管抗过载能力的安全性试验评价[J].火工品.2004,(2):4-7
    12 张学舜.火工品动态著靶模拟仿真技术研究.[博士论文].南京:南京理工大学,2004
    13 王娜.冲击波加载过程中火工品的受力分析.[硕士论文].南京:南京理工大学
    14 王娜,沈瑞琪,叶迎华.霍普金森杆测量火工品过载情况的研究与数值模拟[J].火工品,2004,(1):42-47
    15 吴艳霞.高加速度过载对硼系延期药延期性能的影响.[硕士论文].南京:南京理工大学,2005
    16 邓强.波形整形器在火工品高过载实验中的应用.[硕士论文].南京:南京理工大学,2005
    17 Akin,J.E.有限元法的应用与现实[M].北京:科学出版社,1992
    18 时党勇,李裕春,张胜民.基于ANSYS/LS-DYNA8.1进行显示动力分析[M].北京:清华大学出版社
    19 Clough, R.W. The Finite Element Method in Plane Stress Analysis, Pro. 2ndASME Conference on Electronic Computation, 9(1960)
    20 李景涌.有限元法[M].北京:北京邮电大学出版社,1999,1-315
    21 张亚欧,谷志飞,宋勇.ANSYS7.0有限元分析实用教程[M].北京:清华大学出版社,2004
    22 蓝宇,张连杰.大型有限元分析软件ANSYS[J].应用科技.2000,27(6),11-12
    23 Nicholas, T. Material Behavior at High Strain Rates, Impact Dynamics, John Wiley&Sons, New York. 1982, 6
    24 Φ14.5分段式霍普金生压杆试验装置的设计和计算.中国科技大学五系四专业,1980,10
    25 用于材料动态力学试验的装置与试验.华东工学院
    26 唐志平,王礼立.SHPB试验数据处理系统[J].中国科学技术大学近代力学系,1985,8
    27 莱茵哈特.固体中的应力瞬变[M].北京:煤炭工业出版社,1981,84-97
    28 Mahfuz, H., Al Mamun, W., Austin, L., Haque, A., Jeelani, S. New formulations for the Hopkinson bar technique to extract a response of the constituent material in composite specimens. Journal of Materials: Design and Applications, 2001(2)
    29 Lee, O.S., Lee, J.Y./Kim, G.H., Hwang, J.S. High strain-rate deformation of composite materials using a split Hopkinson bar technique. Key Engineering Materials, 2000(8)
    30 王礼立.应力波基础[M].中国科学技术大学,1986,61-169
    31 王礼立.应力波[M].中国科学技术大学,1982,5-130
    32 王礼立.爆炸与冲击载荷下的结构和材料动态响应研究的新进展[J].爆炸与冲击.2001,21(2),81-88
    33 胡时胜.霍普金森压杆技术[J].兵器材料科学与工程.1991,11:40-47
    34 J.H.McLain.烟火学[M].华东工程学院.1982
    35 Spice, J.E. and Staveley, L.A.K, J. Soc. chen. lnd. 68, 313-319 (1949)
    36 Hill, R.A.W, Sutton, L.E., Temple, R.B., and White, A., Research 3, 569-576 (1950)
    37 Hill, R.A.W. and Cottrell, T.L., "Studies of Combustion Waves" , in 4th Symposium (International) on Combustion, Williams and Wilkins, Baltimore, 1953
    38 杜志明.延期药和点火药燃速测试新方法[J].北京理工大学学报.1997,17(5):650-654
    39 王礼立.应力波基础.国防工业出版社.
    40 杨平.电子信息设备抗振动冲击防护理论与技术研究现状和展望[J].中国机械工程.2002,12(7):1163-1170.
    41 YangPing. Recent development and prospecting of reinforcement of technology information resisting impact & attenuating vibration forelectronic equipment[J]. Mechanical Engineering, 2002, 12(7):1163-1170.
    42 刘俊,石云波,马游春.高过载测试中缓冲材料的试验分析[J].中北大学学报.2005,1-26
    43 丁刚毅,曹得青,蒋维城.ANSYS/LS-DYNA功能与应用简述[M].中国兵工学会爆炸与安全技术第四届年会暨爆炸理论及应用国家重点学科成立十周年学术报告会
    44 LS-DYNA keyword user' s manual[M].Livermore software technology corporation. Aprial. 2003, Version 970
    45 SHPB实验技术及相关研究工作[J].中国科技大学力学和机械工程系冲击动力学实验室,2000
    46 ANSYS/LS-DYNA技术应用报告[M].美国IMAG公司
    47 ANSYS User' s Manual for Revision 5.0[M].SASI. December, 1992
    48 ANSYS/LS-DYNA算法基础和使用方法[M].北京理工大学ANSYS/LS-DYNA中国技术支持中心,1999,1-163
    49 洪庆章,刘清吉,郭嘉源.ANSYS教学范例[M].北京:中国铁道出版社,2002,1-4
    50 嘉木工作室.ANSYS5.7有限元实例分析教程[M].北京:机械工业出版社,2002,1-34

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