不同温度下环氧树脂的高应变率冲击行为研究

doi:10.19936/j.cnki.2096-8000.20250828.001

复合材料科学与工程 ›› 2025, Vol. 0 ›› Issue (8): 1-7.DOI: 10.19936/j.cnki.2096-8000.20250828.001

• 基础与力学性能研究 • 下一篇

不同温度下环氧树脂的高应变率冲击行为研究

邹凯¹, 刘峥¹, 赵昌方^2*, 刘浩², 刘琛³, 张克斌⁴

1.南京理工大学机械工程学院,南京 210094;
2.清华大学航天航空学院,北京 100084;
3.哈尔滨工业大学空间环境与物质科学研究院,哈尔滨 150001;
4.中北大学机电工程学院,太原 030051

收稿日期:2024-06-12 出版日期:2025-08-28 发布日期:2025-09-23
通讯作者: 赵昌方(1995—),男,博士,助理研究员,研究方向为纤维增强复合材料、力学超材料等,lackychang@tsinghua.edu.cn。
作者简介:邹凯(2000—),男,硕士研究生,研究方向为结构力学。
基金资助:
中国博士后科学基金(2024M751640);国家资助博士后研究人员计划(GZC20231315);黑龙江省重点研发计划(2023ZX07D03)

High strain rate impact behaviour of epoxy resins at different temperatures

ZOU Kai¹, LIU Zheng¹, ZHAO Changfang^2*, LIU Hao², LIU Chen³, ZHANG Kebin⁴

1. School of Mechanical Engineering, Nanjing University of Science and Technology, Nanjing 210094, China;
2. School of Aerospace Engineering, Tsinghua University, Beijing 100084, China;
3. School of Space Environment and Physical Science, Harbin Institute of Technology, Harbin 150001, China;
4. School of Mechanical and Electrical Engineering, North University of China, Taiyuan 030051, China

Received:2024-06-12 Online:2025-08-28 Published:2025-09-23

摘要/Abstract

摘要： 为研究环氧树脂在高应变率加载下和不同温度下的动态压缩力学性能,首先通过准静态试验获取应变率为0.001 s^-1的环氧树脂屈服应力,接着通过SHPB方法对环氧树脂进行动态压缩试验,得到了温度分别为25 ℃、50 ℃、70 ℃和应变率分别为1 000 s^-1、2 500 s^-1、3 000 s^-1的单轴压缩条件下的应力-应变曲线,从而获得了环氧树脂在高应变率条件下的包含应变率效应和温度效应等的动态本构关系,结果表明环氧树脂具有应变率效应,且三种高应变率的应力-应变曲线发展趋势相同。最后对屈服应力与温度和应变率之间的关系进行拟合,以描述高应变率下环氧树脂屈服应力与温度的关系,基于此建立的考虑应变率和温度影响的本构模型能够很好地描述环氧树脂在高应变率下的应力-应变关系,研究结果可为环氧树脂本构模型研究提供参考。

关键词: 环氧树脂, SHPB, 冲击力学, 高应变率, 本构方程

Abstract: In order to study the dynamic compressive mechanical properties of epoxy resin under high strain rate loading and different temperatures, the yield stress of epoxy resin with strain rate of 0.001 s^-1 was obtained through quasi-static test, and then the dynamic compression test of epoxy resin was conducted by SHPB method. The stress-strain curves under uniaxial compression at temperatures of 25 ℃, 50 ℃ and 70 ℃ and strain rate of 1 000 s^-1, 2 500 s^-1, 3 000 s^-1 were obtained, and the dynamic constitutive relations including strain rate effect and temperature effect of epoxy resin at high strain rate were obtained. The results show that the epoxy resin has strain rate effect, and the development trend of the stress-strain curves of the three high strain rates is the same. Finally, the relationship between yield stress, temperature and strain rate was fitted to describe the relationship between yield stress and temperature of epoxy resin at high strain rate. Based on this, the established constitutive model considering the influence of strain rate and temperature can well describe the stress-strain relationship of epoxy resin at high strain rate, and the research results can provide references for the study of constitutive model of epoxy resin.

Key words: epoxy resin, SHPB, impact mechanics, high strain rate, constitutive equatio

中图分类号:

TB332

邹凯, 刘峥, 赵昌方, 刘浩, 刘琛, 张克斌. 不同温度下环氧树脂的高应变率冲击行为研究[J]. 复合材料科学与工程, 2025, 0(8): 1-7.

ZOU Kai, LIU Zheng, ZHAO Changfang, LIU Hao, LIU Chen, ZHANG Kebin. High strain rate impact behaviour of epoxy resins at different temperatures[J]. COMPOSITES SCIENCE AND ENGINEERING, 2025, 0(8): 1-7.

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不同温度下环氧树脂的高应变率冲击行为研究

High strain rate impact behaviour of epoxy resins at different temperatures

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