| 应用Voronoi随机模型研究多孔材料中波的传播特性 |
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| 引用本文： | 康锦霞,王志华,赵隆茂.应用Voronoi随机模型研究多孔材料中波的传播特性[J].兵工学报,2010(Z1). |
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| 作者姓名： | 康锦霞 王志华 赵隆茂 |
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| 作者单位： | 太原理工大学应用力学研究所;太原理工大学建筑与土木工程学院; |
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| 基金项目： | 国家自然科学基金项目(90716005、10802055); 山西省自然科学基金项目(2007021005) |
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| 摘 要： | 高孔隙率泡沫金属材料由于其较长的应力平台可以吸收较多的能量,在结构耐撞性设计中有重要的应用前景。然而,实验研究表明当高孔隙率泡沫金属材料承受强冲击载荷时,可能发生应力/力增强现象,从而对被保护结构造成较严重的损伤。采用二维Voronoi随机分布模型研究"真实"泡沫材料在不同持时的强冲击载荷作用下可能出现的力/应力增强现象。对5种不规则的泡沫金属材料计算结果表明:在强冲击载荷达到一定强度时,在泡沫金属材料中应力/力传递会出现应力/力的增强现象。
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| 关 键 词： | 多孔材料 Voronoi分布 波的传播 应力增强 冲击载荷 |
Study on Wave Propagation Behavior of Cellular Materials Based on Voronoi Random Model |
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| KANG Jin-xia,WANG Zhi-hua,ZHAO Long-mao.Study on Wave Propagation Behavior of Cellular Materials Based on Voronoi Random Model[J].Acta Armamentarii,2010(Z1). |
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| Authors: | KANG Jin-xia WANG Zhi-hua ZHAO Long-mao |
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| Affiliation: | KANG Jin-xia1,2,WANG Zhi-hua1,ZHAO Long-mao1(1.Institute of Applied Mechanics,Taiyuan University of Technology,Taiyuan 030024,Shanxi,China,2.College of Architecture and Civil Engineering,China) |
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| Abstract: | The cellular metal materials can absorb a lot of energy due to their relative wide stress plateau,and it is widely used in the design of structural crashworthiness.However,some experimental results show that the stress or force enhancement will be observed when they are subjected to intense impacts,and therefore leads to severe damage of the objects being protected.The possible force/stress enhancement of 'real' cellular material subjected to intense impact load continuous in different times is investigated... |
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| Keywords: | cellular material Voronoi tessellation wave propagation stress enhancement impact load |
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