Experiment of dynamic response of multilayered pyramidal lattices during ball hammer collision loading
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摘要: 为研究金字塔点阵夹芯板结构在球头落锤碰撞冲击下的抗冲击性能，采用模型实验的方法，加工制作了金字塔点阵4层夹芯板实验模型。通过实验得到了金字塔点阵夹芯板结构在碰撞冲击载荷作用下的坍塌变形过程和变形模式，揭示了点阵结构夹芯层的吸能机理。结果表明，在球头落锤的中等强度冲击载荷下，整个夹芯板结构的最终变形可划分为迎冲面、夹层和背冲面3个区域，形成类似“三明治”式的变形模式。Abstract: To investigate the shock resistance of multi-layered pyramidal lattice panels impacted by a ball hammer, we carried out an experiment of 4-layered pyramidal lattices under the impact of a ball hammer, analyzed the collapse deformation process and mode, and put forward the energy absorption mechanism. Our results show that, when subjected to a medium impact of a ball hammer, the final deformation of the multilayered pyramidal lattice panels can be composed of three parts where deformation occurs: head-on, interlayer, and backside, thus forming a "sandwich"-like deformation mode.
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Key words:
- solid mechanics /
- shock resistance /
- impact /
- composite sandwich /
- pyramidal lattices
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[1] 卢天健, 何德坪, 陈常青, 等.超轻多孔金属材料的多功能特性及应用[J].力学进展, 2006, 36(4): 517-535. http://www.wanfangdata.com.cn/details/detail.do?_type=perio&id=lxjz200604004Lu Tian-jian, He De-ping, Chen Chang-qing, et al. The multi-functionality of ultra-light porous metals and their applications[J]. Advances in Mechanics, 2006, 36(4): 517-535. http://www.wanfangdata.com.cn/details/detail.do?_type=perio&id=lxjz200604004 [2] 范华林, 杨卫.轻质高强点阵材料及其力学性能研究进展[J].力学进展, 2007, 37(1): 99-112. http://www.cnki.com.cn/Article/CJFDTotal-LXJZ200701012.htmFan Hua-lin, Yang Wei. Development of lattice materials with high specific stiffness and strength[J]. Advances in Mechanics, 2007, 37(1): 99-112. http://www.cnki.com.cn/Article/CJFDTotal-LXJZ200701012.htm [3] Evans A G. Lightweight materials and structures[J]. Materials Research Bulletin, 2001, 26: 790-797. doi: 10.1557/mrs2001.206 [4] Evans A G, Hutchinson J W, Fleck N A, et al. The topological design of multifunctional cellular metals[J]. Progress in Materials Science, 2001, 46(3): 309-327. http://www.sciencedirect.com/science/article/pii/S0079642500000165 [5] 方岱宁, 张一慧, 崔晓东.轻质点阵材料力学与多功能设计[M].北京: 科学出版社, 2009: 5-9. [6] Wadley H N G. Blast and fragment protective sandwich panel concepts for stainless steel monohull designs[R]. ADA488340, 2008. [7] Wadley H, Dharmasena K, Chen Y, et al. Compressive response of multilayered pyramidal lattices during underwater shock loading[J]. International Journal of Impact Engineering, 2008, 35: 1102-1114. doi: 10.1016/j.ijimpeng.2007.06.009 [8] Wei Z, DeshpandeVS, Evans A G, et al. The resistance of metallic plates to localized impulse[J]. Journal of the Mechanics and Physics of Solids, 2008, 56(5): 2074-2091. doi: 10.1016/j.jmps.2007.10.010 [9] Xue Z, Hutchinson J W. A comparative study of impulse-resistance metal sandwich plates[J]. International Journal of Impact Engineering, 2004, 30: 1283-1305. doi: 10.1016/j.ijimpeng.2003.08.007 [10] Kooistra G W, Deshpande V S, Wadley H. Compressive behavior of age hardenable tetrahedral lattice truss structure made from aluminum[J]. Acta Materialia, 2004, 52(14): 4229-4237. doi: 10.1016/j.actamat.2004.05.039 [11] 吴梵, 朱锡, 梅志远.船舶结构力学[M].北京: 国防工业出版社, 2010: 187-195. -
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