| 中等应变率下泡沫铝的吸能特性 |
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| 引用本文： | 王青春,范子杰,桂良进,王政红,付自来. 中等应变率下泡沫铝的吸能特性[J]. 材料研究学报, 2005, 19(6): 601-607 |
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| 作者姓名： | 王青春 范子杰 桂良进 王政红 付自来 |
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| 作者单位： | 清华大学汽车安全与节能国家重点实验室;洛阳船舶材料研究所 |
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| 摘 要： | 进行了不同密度、高度和压缩方向下泡沫铝的准静态压缩试验和中等应变率下(＜100 s-1)的冲击试验,研究了具有不同密度的闭孔泡沫铝在准静态压缩和冲击工况下的吸能特性.结果表明,泡沫铝是一种近似的各向同性结构,具有较高的单位质量吸能特性,是一种较好的吸能材料.在准静态和中等应变率冲击条件下,泡沫铝对应变率不敏感,其应力应变关系与应变率关系不大.不同的泡沫铝,其平台应力与密度之间的关系不同,在研究其性能时,必须测量应力-应变关系.泡沫铝的致密区对其吸能特性有很大的影响.
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| 关 键 词： | 金属材料 泡沫铝 能量吸收 应变率 |
| 文章编号： | 1005-3093(2005)06-0601-07 |
| 收稿时间： | 2004-10-09 |
| 修稿时间： | 2005-06-27 |
Energy absorption behaviour of aluminium foam under medium strain rate |
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| WANG Qingchun,FAN Zijie,GUI Liangjin,WANG Zhenghong,FU Zilai. Energy absorption behaviour of aluminium foam under medium strain rate[J]. Chinese Journal of Materials Research, 2005, 19(6): 601-607 |
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| Authors: | WANG Qingchun FAN Zijie GUI Liangjin WANG Zhenghong FU Zilai |
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| Affiliation: | 1.State Key Laboratory of Automotive Safety and Energy, Tsinghua University, Beijing 100084; 2.Luoyang Ship Material Research Institute, Luoyang 471039 |
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| Abstract: | Quasi-static axial compression and drop hammer tests were carried out to study the energy absorption behaviour of the aluminium foam with different densities. First, the axial compression behaviour of aluminium foam with different densities, heights and directions was tested; then drop hammer tests with medium strain rate(<100 s-1) were carried out. The test results show that aluminium foam is quite close to a kind of isotropic structure, with high specific energy absorption. The aluminium foam samples show no strain rate sensitivity under medium strain rate. |
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| Keywords: | metallic materials aluminium foam energy absorption strain rate |
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