| 通孔泡沫铝的动态压缩行为 |
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| 引用本文： | 程和法, 黄笑梅, 王强, 田杰, 韩福生. 通孔泡沫铝的动态压缩行为[J]. 爆炸与冲击, 2006, 26(2): 169-173. doi: 10.11883/1001-1455(2006)02-0169-05 |
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| 作者姓名： | 程和法 黄笑梅 王强 田杰 韩福生 |
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| 作者单位： | 1. 合肥工业大学材料科学与工程学院，安徽 合肥 230009；; 2. 中国科科技大学力学与机械工程系，安徽 合肥 230026；; 3. 中国科学院固体物理研究所，安徽 合肥 230031 |
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| 基金项目： | 安徽省自然科学基金项目(03044602) |
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| 摘 要： | 在SHPB装置上对渗流法制备的通孔泡沫铝进行了动态压缩实验，研究了相对密度为0.341~0.419的通孔泡沫铝在10-3~2000 s-1应变率范围内的压缩响应特征和应变率相关性，并用扫描电镜（scanning electron microscope,SEM)分析了泡沫铝的压缩变形特征。实验结果表明，通孔泡沫铝有明显应变率效应，随应变率上升，泡沫铝流动应力提高。SEM观察结果揭示，在动态压缩下，通孔泡沫铝宏观上均匀变形，微观变形机制以泡孔横向伸展坍塌为主。
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| 关 键 词： | 固体力学 应变率效应 动态压缩 通孔泡沫铝 |
| 文章编号： | 1001-1455(2006)02-0169-05 |
| 收稿时间： | 2005-02-02 |
| 修稿时间： | 2005-05-30 |
The dynamic compressive behaviors of an open-cell aluminum foam |
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| CHENG He-fa, HUANG Xiao-mei, WANG Qiang, TIAN Jie, HAN Fu-sheng. The dynamic compressive behaviors of an open-cell aluminum foam[J]. Explosion And Shock Waves, 2006, 26(2): 169-173. doi: 10.11883/1001-1455(2006)02-0169-05 |
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| Authors: | CHENG He-fa HUANG Xiao-mei WANG Qiang TIAN Jie HAN Fu-sheng |
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| Affiliation: | 1. School of Material Science and Engineering of Hefei University of Technology, Hefei 230009, Anhui, China;; 2. Department of Mechanics and Mechanical Engineering, University of Science and Technology of China, Hefei 230026, Anhui, China;; 3. Laboratory of Internal Friction and Defects in Solids, Institute of Solid State Physics, Chinese Academy of Sciences, Hefei 230031, Anhui, China |
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| Abstract: | The dynamic compressive experiments were conducted on the open-cell aluminum foams prepared by infiltration process using the SHPB. The dynamic response and strain rate dependence of the aluminum foams with the relative density of 0.341~0.419 were investigated in the strain rate range from 10-3 to 2000 s-1, and the deforming characteristic of the foams was observed by using the scanning electron microscope(SEM). Experimental results show that the flow stresses of the aluminum foams increase with increasing strain rate, demonstrating a distinct strain rate effect in the open-cell aluminum foams. Observed results with SEM reveal a homogeneously macroscopic deforming mode in the dynamic compression of the open-cell aluminum foam. However, the microscopic deformation of the foams is adopted by the transversal stretch of the cells. |
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| Keywords: | solid mechanics strain rate effect dynamic compression open cell aluminum foam |
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