某PBX炸药的动态力学性能研究

李俊玲; 卢芳云; 傅华; 赵玉刚; 谭多望

doi:10.11858/gywlxb.2011.02.012

某PBX炸药的动态力学性能研究

doi: 10.11858/gywlxb.2011.02.012

1.
国防科技大学理学院工程物理研究所，湖南长沙 410073；
2.
中国工程物理研究院流体物理研究所，冲击波物理与爆轰物理国防科技重点实验室，四川绵阳 621900

详细信息

通讯作者:
卢芳云

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出版历程
- 收稿日期: 2010-01-13
- 修回日期: 2010-04-11
- 发布日期: 2011-04-15

Research on the Dynamic Behavior of a PBX Explosive

1.
Institute of Engineering Physics, College of Science, National University of Defense Technology, Changsha 410073, China;
2.
National Key Laboratory of Shock Wave and Detonation Physics, Institute of Fluid Physics, CAEP, Mianyang 621900, China

More Information

Corresponding author: LU Fang-Yun

摘要

摘要: PBX炸药作为现代武器的主装药，它的力学行为决定着武器的生存能力。为了研究PBX炸药的动态力学特性，采用分离式霍普金森压杆（Split Hopkinson Pressure Bar，SHPB）作为加载手段，结合半导体应变片测试技术和压电晶体监测技术，保证了实验数据的有效性。利用SHPB加载波整形技术，实现了材料两端应力平衡和常应变率加载，得到了不同应变率（90~410 s-1）下材料的应力-应变曲线。根据材料的模量、破坏强度和破坏应变随应变率的变化规律，采用粘性修正的Sargin模型，得到了该PBX炸药在单轴压缩下的唯象本构模型，模拟结果与实验曲线符合较好。
- 固体力学 /
- 分离式霍普金森压杆 /
- 应变率效应 /
- 本构模型
Abstract: PBX explosive is the main charge of modern weapons, so its mechanical behavior determines the survival ability of weapons. To study the dynamic behavior of PBX explosive, a series of split Hopkinson pressure bar (SHPB) tests for PBX explosive have been carried out. With combination of the semiconductor strain gauge and quartz crystal transducer, the validity of the experimental data was obtained. In addition, the stress equilibrium of the specimen and constant strain rate loading were realized experimentally using wave shaping technique. The stress-strain curves of PBX explosive under different strain rates (90~410 s-1) were acquired. According to the variations of the dynamic modulus, failure strength and failure strain with strain rate, a constitutive model of the PBX explosive under uniaxial compression was proposed. The fitted curves derived from the developed model agree well with the experimental results.
- solid mechanics /
- split Hopkinson pressure bar /
- strain rate effect /
- constitutive model

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参考文献(15)

Goudreau G, Moen W, Breithaupt D. Evaluation of Mechanical Properties of PBXW-113 Explosive, UCID-20358 [R]. California: Lawrence Livermore National Laboratory, 1985.

Hoffman H J. High-Strain Rate Testing of Gun Propellants, AD-A208826 [R]. Columbia: Chemical Propulsion Information Agency, 1989.

Blumenthal W R, Thompson D G, Cady C D, et al. Compressive Properties of PBXN-110 and Its HTPB-Based Binder as a Function of Temperature and Strain Rate [A]//The 12th International Detonation Symposium [C] . San Diego, California, 2002.

Luo J R. PBX's Damage, Fracture and Constitutive Relationship [D]. Mianyang: China Academy of Engineering Physics, 2001. (in Chinese)

罗景润. PBX的损伤、断裂及本构关系 [D]. 绵阳: 中国工程物理研究院, 2001.

Li Y L, Li D H, Hu S S, et al. An Experimental Study on Constitutive Relation of TATB Explosive [J]. Explosion and Shock Waves, 1999, 19(4): 355-359. (in Chinese)

李英雷, 李大红, 胡时胜, 等. TATB钝感炸药本构关系的实验研究 [J]. 爆炸与冲击, 1999, 19(4): 355-359.

Wu H M, Lu F Y, Lu L, et al. Experimental Studies on Strain-Rate Effects of Mechanical Behaviors of Energetic Materials [J]. Energetic Materials, 2004, 12(4): 227-230. (in Chinese)

吴会民, 卢芳云, 卢力, 等. 三种含能材料力学行为应变率效应的实验研究 [J]. 含能材料, 2004, 12(4): 227-230.

Chen R, Lu F Y, Lin Y L, et al. Mechanical Behavior and Constitutive Model of Pressed Aluminized Explosive [J]. Energetic Materials, 2007, 12(5): 460-464. (in Chinese)

陈荣, 卢芳云, 林玉亮, 等. 一种含铝炸药压缩力学性能和本构关系研究 [J]. 含能材料, 2007, 12(5): 460-464.

Chen W, Lu F, Zhou B. A Quartz-Crystal-Embedded Split Hopkinson Pressure Bar for Soft Materials [J]. Exp Mech, 2000, 40(1): 1-6.

Pan Y, Chen W, Song B. Upper Limit of Constant Strain Rates in a Split Hopkinson Pressure Bar Experiment with Elastic Specimens [J]. Exp Mech, 2005, 45(5): 440-446.

Ottosen N S, Ristinmaa M. The Mechanics of Constitutive Modeling [M]. Oxford, UK: Elsevier Ltd. , 2005.

Sargin M. Stress-Strain Relationships for Concrete and the Analysis of Structural Concrete Sections [M]. Waterloo, Canada: University of Waterloo, 1971.

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