冲击载荷下HTPB推进剂的热耗散

童心; 李龙; 马赛尔; 许进升; 郑亚

doi:10.11883/bzycj-2017-0219

冲击载荷下HTPB推进剂的热耗散

doi: 10.11883/bzycj-2017-0219

童心¹,
李龙²,
马赛尔³,
许进升^1, ,,
郑亚¹

1.
南京理工大学机械工程学院, 江苏南京 210094
2.
南京理工大学瞬态物理国家重点实验室, 江苏南京 210094
3.
中国船舶重工集团公司上海船舶电子设备研究所, 上海 201108

基金项目:

国家自然科学基金项目 51606098

江苏省自然科学基金项目 BK20140772

详细信息

作者简介:
童心(1991-), 男, 博士研究生

通讯作者:
许进升, xujinsheng@njust.edu.cn

中图分类号: O381;V512.3
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- 被引次数: 0
出版历程
- 收稿日期: 2017-06-22
- 修回日期: 2017-09-26
- 刊出日期: 2018-11-25

Heat dissipation of HTPB propellant under impact loading

1.
School of Mechanical Engineering, Nanjing University of Science and Technology, Nanjing 210094, Jiangsu, China
2.
Natural Key Laboratory of Transient Physics, Nanjing University of Science and Technology, Nanjing 210094, Jiangsu, China
3.
Shanghai Marine Electric Equipment Research Institute, China Shipbuilding Industry Corporation, Shanghai 201108, China

摘要

摘要: 为了研究HTPB推进剂在冲击载荷下的能量耗散规律，结合分离式霍普金森压杆(SHPB)搭建了红外测温系统。该系统响应速度快，可同步获取冲击实验中HTPB推进剂表面的温度变化。结果表明，HTPB推进剂受载后表现出黏-超弹特性，并且在高速变形中试件经历了温度的显著升高。在黏-超弹性本构模型的基础上引入温度项，考虑了热软化效应，更加准确地描述了HTPB推进剂在高应变率变形下的热力学响应，可对复合固体推进剂在冲击载荷下的热力耦合分析提供参考。
- 复合固体推进剂 /
- SHPB /
- 红外辐射测温 /
- 热耗散
Abstract: In this study, using a split Hopkinson pressure bar (SHPB), we assembled a fast-responding infrared temperature measurement system, capable of simultaneously obtaining the superficial temperature change of the HTPB propellant in impact experiments, to investigate the energy dissipation pattern of HTPB propellant under impact loading. The results show that the HTPB propellant exhibited visco-hyper elastic properties, and experienced significant temperature rise in high speed deformation. Based on the visco-hyper elastic constitutive model, we also introduced a heat softening function to more accurately describe the thermodynamic response of the HTPB propellant at high strain rates. Our results provide support for the analysis of thermo mechanical coupling of the solid composite propellant under impact loading.
- solid composite propellant /
- SHPB /
- infrared radiation thermography /
- heat dissipation

HTML全文

图 1 SHPB和瞬态测温模块

Figure 1. SHPB and transient temperature measurement module

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图 2 原位标定结果

Figure 2. Results of in-situ calibration

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图 3 应变和温度信号

Figure 3. Signals of strain and temperature

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图 4 应力平衡检验

Figure 4. Verification of stress equilibrium

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图 5 HTPB推进剂的真实应力应变关系

Figure 5. True stress-strain relation of HTPB propellant

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图 6 HTPB推进剂的应力、温度与应变的关系

Figure 6. Typical stress and temperature versus strain for HTPB propellant

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图 7 经热软化函数修正后的预测结果

Figure 7. Result of prediction with application of temperature softening function

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