| 梯度泡沫铝的高速碰撞研究 |
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| 引用本文： | 向宇,程涛.梯度泡沫铝的高速碰撞研究[J].轻金属,2012(3):54-59. |
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| 作者姓名： | 向宇 程涛 |
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| 作者单位： | 1. 广西工学院汽车工程系,广西柳州,545006
2. 广西工学院汽车工程系,广西柳州545006;武汉大学测绘遥感信息工程国家重点实验室,湖北武汉430079 |
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| 基金项目： | 广西科学基金，国家自然科学基金，广西教育厅项目 |
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| 摘 要： | 通过LS-DYNA模拟分析了梯度泡沫铝的碰撞性能。在高速碰撞下,相对密度为0.18的均质泡沫铝的防护效果好于梯度泡沫铝。但是,梯度泡沫铝的加速度时程曲线的线型可根据实际的需要设计。有效载荷的最大加速度、加速度时程曲线的形状与梯度泡沫铝的密度梯度有关。小梯度的\型梯度泡沫铝是最好的吸能器。同时对梯度泡沫铝的作用机制进行了分析。
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| 关 键 词： | 梯度泡沫铝 吸能 数值模拟 应力波 |
Research on the high velocity impacting of graded aluminium foam |
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| XIANG Yu
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CHENG Tao.Research on the high velocity impacting of graded aluminium foam[J].Light Metals,2012(3):54-59. |
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| Authors: | XIANG Yu CHENG Tao |
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| Affiliation: | 1,2(1.Department of Automotive Engineering,Guangxi University of Technology,Liuzhou 545006,China; 2.State Key Laboratory of Information Engineering in Surveying,Mapping and Remote Sensing, Wuhan University,Wuhan 430079,China) |
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| Abstract: | The impacting behaviors of graded aluminium foam were studied by LS-DYNA.The shielding effect of uniform aluminium foam(relative density 0.18) was superior to graded aluminium foam under the action of high impulsive load.However,the acceleration-time curve shape of graded aluminium foam could be designed based on reality requirement.The most acceleration and acceleration-time curve shape of actual load were relative to aluminium foam’ density gradient.Little density gradient aluminium foam(\) was the best energy absorption instrument.Meanwhile,the work mechanism of graded aluminium foam was analyzed. |
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| Keywords: | graded aluminium foam energy absorption numerical simulation stress wave |
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