EPDM 包覆层材料静动态压缩实验研究
The Static and Dynamic Compression Experimental Research of EPDM
Received date: 2017-06-10
Online published: 2025-05-28
为获得EPDM材料不同应变率下的力学特性,文中利用万能试验机与分离式霍普金森压杆(SHPB)装置完成静态和动态压缩实验,并对动态实验数据进行有效性检验。基于所得不同应变率下的应力应变曲线,发现EPDM是一种率敏感材料,产生相同变形时所对应的应力随应变率的增加而增加,但当达到一定高应变率时,应变率敏感性会减弱;且材料在大应变时会出现硬化现象,应力增幅变大。
关键词： EPDM; 分离式霍普金森压杆(SHPB); 压缩; 高应变率; 率敏感
蒋晶 , 周长省 , 赵磊 , 陈雄 , 许进升 . EPDM 包覆层材料静动态压缩实验研究[J]. 弹箭与制导学报, 2015 , 35(5) : 95 -98 . DOI: 10.15892/j.cnki.djzdxb.2015.05.024
In order to obtain mechanical properties of EPDM material under different strain rates, static and dynamic compression experiments were completed by using a universal testing machine and split Hopkinson pressure bar (SHPB) device in this paper, and availability of the dynamic experimental data was examined. Based on stress-strain curves of EPDM material under different strain rates, it can be found that EPDM is a rate sensitive material, when producing the same deformation, the corresponding stress increases with the increase of strain rate, but when reaching a certain high strain rate, the strain rate sensitivity decreases. In addition, the hardening phenomena happen when EPDM is deformed in large strain, and the increase of the stress becomes larger.
Key words： EPDM; SHPB; compression; high strain rate; rate sensitivity
| [1] | 刘洋, 李江, 杨飒, 等. 过载条件下 EPDM 绝热材料烧蚀机理和模型研究(I)——烧蚀机理分析[J]. 固体火箭技术, 2011, 34 (2): 229-233. |
| [2] | 徐义华, 胡春波, 曾卓雄, 等. 三元乙丙绝热材料炭化层结构及力学特性表征研究[J]. 弹箭与制导学报, 2012, 32 (3): 237-242. |
| [3] | 王明, 沈佳斌, 杜芹, 等. EPDM/PS 交替多层复合材料的力学性能分析[J]. 复合材料学报, 2007, 24 (6): 36-43. |
| [4] | 王勇. EPDM 的压缩永久变形性能研究[J]. 世界橡胶工业, 2009, 36 (6): 43-45. |
| [5] | Song B, Chen W. One-dimensional dynamic compressive behavior of EPDM rubber[J]. Journal of Engineering Materials and Technology, 2003, 125 (3): 294-301. |
| [6] | 孙朝翔, 鞠玉涛, 胡少青, 等. 聚碳酸酯高应变率分离式霍普金森压杆实验研究[J]. 南京理工大学学报:自然科学版, 2012, 36 (3): 529-533. |
| [7] | 周风华, 王礼立, 胡时胜. 高聚物 SHPB 试验中试件早期应力不均匀性的影响[J]. 实验力学, 1992, 7 (1): 23-29. |
| [8] | 宋博, 姜锡权, 陈为农. 霍普金森压杆实验中的脉冲整形技术[C]// 第三届全国爆炸力学实验技术交流会论文集, 2004: 1-70. |
| [9] | 刘滢滢, 邢誉峰. 超弹性橡胶材料的改进 Rivlin 模型[J]. 固体力学学报, 2012, 33 (4): 408-414. |
| [10] | 刘锋, 朱艳峰, 李丽娟, 等. 橡胶类材料大应变硬化的本构关系[J]. 华南理工大学学报:自然科学版, 2006, 34 (4): 9-12. |
| [11] | Woo SC, Kim JT, Cho CH, et al. The dynamic compressive behavior of armor structural materials in split Hopkinson pressure bar test[J]. Journal of Strain Analysis for Engineering Design, 2013, 48 (7): 420-436. |
| [12] | 张君发, 鞠玉涛, 孙朝翔, 等. NEPE推进剂动态力学性能研究[J]. 固体火箭技术, 2013, 36 (3): 358-362. |
/
| 〈 |
|
〉 |