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王博 张雄 徐胜利. 2D周期蜂窝结构面内静动态压缩力学行为研究[J]. 力学学报, 2009, 41(2): 274-281. DOI: 10.6052/0459-1879-2009-2-2007-400
引用本文: 王博 张雄 徐胜利. 2D周期蜂窝结构面内静动态压缩力学行为研究[J]. 力学学报, 2009, 41(2): 274-281. DOI: 10.6052/0459-1879-2009-2-2007-400
Bo Wang, Xiong Zhang, Shengli Xu. Mechanical behavior of 2d periodic honeycombs under in-plane uniaxial compression[J]. Chinese Journal of Theoretical and Applied Mechanics, 2009, 41(2): 274-281. DOI: 10.6052/0459-1879-2009-2-2007-400
Citation: Bo Wang, Xiong Zhang, Shengli Xu. Mechanical behavior of 2d periodic honeycombs under in-plane uniaxial compression[J]. Chinese Journal of Theoretical and Applied Mechanics, 2009, 41(2): 274-281. DOI: 10.6052/0459-1879-2009-2-2007-400

2D周期蜂窝结构面内静动态压缩力学行为研究

Mechanical behavior of 2d periodic honeycombs under in-plane uniaxial compression

  • 摘要: 基于``平板开缝-装配-焊接''工艺制备了以高聚物为基体的Kagome等蜂窝结构,并开展了Kagome, 正三角形和菱形蜂窝结构的面内准静态压缩力学行为实验研究,实验过程中应用CCD图像采集系统和图像相关法对试件进行了全场位移监测. 另外对比传统正六边形蜂窝,采用数值分析技术,模拟了低速冲击下不同蜂窝结构坍塌行为. 实验结果和数值模拟均揭示了在材料用量和结构尺寸完全相同的情况下,Kagome蜂窝结构的面内能量吸收性能优于其它3种蜂窝结构,并发现了Kagome蜂窝压缩变形时所特有的局部蜂窝旋转变形. 研究结果表明改变蜂窝形状和周期性排布会对蜂窝结构整体的变形模式以及能量吸收性能产生较大的影响.

     

    Abstract: In the present study, polyvinylchloride (PVC) andpolypropylene (PP) ``based honeycomb structures with different inner celltopologies, such as Kagome, Triangle and Diamond, are fabricated with the``Strip slotting- Assembling-Welding'' technique. The quasi-static crushbehaviors under in-plane compression are experimentally investigated forKagome, Triangle and Diamond cell structures. The Charge Couple Devices(CCD) camera and digital image correlation (DIC) method are applied toobtain the the whole strain-field of the structures. Experimental resultssuggest that the energy absorption performance of Kagome structure issuperior to others with the same materials volume and structural sizes. Inaddition, a special rotation deformation mechanism of Kagome honeycombstructures is addressed. Moreover, numerical analyses of Kagome and Trianglecells under low velocity impact are studied in comparison with the resultsfrom the known Hexagonal cells. The numerical results show that the Kagomecells with the rotation deformation behavior have better energy absorptionperformance than triangle and hexagonal cells. Both experimental andnumerical results indicate great sensitivity of the local honeycombmorphology to deformation and energy absorption.

     

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