不同载荷下TA2钛合金柱壳爆炸碎裂的实验研究

潘顺吉 俞鑫炉 董新龙

潘顺吉, 俞鑫炉, 董新龙. 不同载荷下TA2钛合金柱壳爆炸碎裂的实验研究[J]. 高压物理学报, 2017, 31(4): 382-388. doi: 10.11858/gywlxb.2017.04.005
引用本文: 潘顺吉, 俞鑫炉, 董新龙. 不同载荷下TA2钛合金柱壳爆炸碎裂的实验研究[J]. 高压物理学报, 2017, 31(4): 382-388. doi: 10.11858/gywlxb.2017.04.005
PAN Shun-Ji, YU Xin-Lu, DONG Xin-Long. Experimental Study of Fragmentation Behavior of ExplodedTA2 Alloy Cylinders with Varied Charge[J]. Chinese Journal of High Pressure Physics, 2017, 31(4): 382-388. doi: 10.11858/gywlxb.2017.04.005
Citation: PAN Shun-Ji, YU Xin-Lu, DONG Xin-Long. Experimental Study of Fragmentation Behavior of ExplodedTA2 Alloy Cylinders with Varied Charge[J]. Chinese Journal of High Pressure Physics, 2017, 31(4): 382-388. doi: 10.11858/gywlxb.2017.04.005

不同载荷下TA2钛合金柱壳爆炸碎裂的实验研究

doi: 10.11858/gywlxb.2017.04.005
基金项目: 

国家自然科学基金 11672143

国家自然科学基金委员会-中国工程物理研究院“NSAF”联合基金 U1230122

详细信息
    作者简介:

    潘顺吉(1992—), 男,硕士研究生,主要从事材料力学性能研究.E-mail:panshunji_nbu@163.com

    通讯作者:

    董新龙(1964—), 男,博士,教授,博士生导师,主要从事材料力学性能研究.E-mail:dongxinlong@nbu.edu.cn

  • 中图分类号: O383; TJ156

Experimental Study of Fragmentation Behavior of ExplodedTA2 Alloy Cylinders with Varied Charge

  • 摘要: 金属柱壳外爆的膨胀碎裂过程及机理十分复杂,与多个因素有关。对TA2钛合金柱壳在不同装药爆炸驱动下的膨胀碎裂开展实验研究,探讨载荷特性对金属柱壳变形、碎裂过程及碎片特征的影响。结果显示:在较高爆炸压力作用下,柱壳厚度方向的中间部位首先形成损伤带,碎裂破坏从该处起始向内、外表面扩展,且随着载荷脉宽的减小,试样厚度中部的损伤带却更趋严重,试样外表面产生层裂破坏现象;在较低爆压下,断裂裂纹从内壁起始,沿45°或135°方向剪切扩展,断裂机制与较高爆压下不同。分析认为,不同特性爆炸冲击波来回反射、相互作用会导致不同机制竞争,影响柱壳断裂起始、裂纹扩展过程及模式。

     

  • 图  实验加载装置及炸药组装示意((a)加载药柱;(b)药柱横截面;(c)金属试样与炸药组装)

    Figure  1.  Experiment set-up ((a) Schematic of cylinder charge; (b) Cross section; (c) Photo of specimen and charge)

    图  沿轴向不同位置的等效应变随应力三轴度的变化

    Figure  2.  Equivalent strain vs. stress triaxiality atdifferent locations along cylinder axis

    图  TA2原始金相

    Figure  3.  Primary metallographyof TA2

    图  不同装药下TA2柱壳内表面的压力载荷

    Figure  4.  Pressure on the inner surface ofTA2 cylinder for different charges

    图  载荷1作用下回收碎片分布

    Figure  5.  Recovered fragments ofexploded cylinder under Load 1

    图  载荷1作用下碎片形貌及截面微观金相

    ((a)宏观碎片断口及内表面条纹;(b)碎片截面裂纹及微孔洞损伤带;(c)近内表面组织特征)

    Figure  6.  Fragment's characteristics and metallography underLoad 1 ((a) Fragment and cracks distribution at theinner surface; (b) Cracks and micro-voids band; (c) Metallographic characteristics near the inner surface)

    图  载荷2作用下碎片形貌及截面微观金相

    ((a)宏观碎片;(b)柱壳内壁起始裂纹;(c)裂纹发展及组织变化)

    Figure  7.  Fragment's characteristics andmetallography under Load 2 ((a) Fragment; (b) Shear crack initiation at the inner surface; (c) Cracks growth and metallographic characteristics)

    图  载荷3作用下回收碎片分布

    Figure  8.  Recovered fragments of explodedcylinder under Load 3

    图  载荷3作用下碎片形貌及截面微观金相((a)碎片特征;(b)碎片截面金相及微孔洞分布带)

    Figure  9.  Fragment and micrograph under Load 3 ((a) Fragment; (b) Metallograph and micro-voids distribution)

    表  1  实验装药条件

    Table  1.   Charge conditions in the expriments

    Load d/(mm) Liningmaterial Liningthickness/(mm) Pulse widthof load/(μs) Peak pressureof load/(GPa)
    Load 1 1.9 2.5 19
    Load 2 1.9 Copper 1.5 2.5 12
    Load 3 1.2 1.0 19
    下载: 导出CSV
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出版历程
  • 收稿日期:  2017-03-21
  • 修回日期:  2017-04-10

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