三周期极小曲面结构混合设计及其在冲击载荷下的力学行为

刘嘉婧 李子豪 王志华 刘志芳 李世强

刘嘉婧, 李子豪, 王志华, 刘志芳, 李世强. 三周期极小曲面结构混合设计及其在冲击载荷下的力学行为[J]. 高压物理学报, 2024, 38(5): 054102. doi: 10.11858/gywlxb.20240783
引用本文: 刘嘉婧, 李子豪, 王志华, 刘志芳, 李世强. 三周期极小曲面结构混合设计及其在冲击载荷下的力学行为[J]. 高压物理学报, 2024, 38(5): 054102. doi: 10.11858/gywlxb.20240783
LIU Jiajing, LI Zihao, WANG Zhihua, LIU Zhifang, LI Shiqiang. Hybrid Design of Triply Periodic Minimal Surface Structure and Its Mechanical Behavior under Impact Loading[J]. Chinese Journal of High Pressure Physics, 2024, 38(5): 054102. doi: 10.11858/gywlxb.20240783
Citation: LIU Jiajing, LI Zihao, WANG Zhihua, LIU Zhifang, LI Shiqiang. Hybrid Design of Triply Periodic Minimal Surface Structure and Its Mechanical Behavior under Impact Loading[J]. Chinese Journal of High Pressure Physics, 2024, 38(5): 054102. doi: 10.11858/gywlxb.20240783

三周期极小曲面结构混合设计及其在冲击载荷下的力学行为

doi: 10.11858/gywlxb.20240783
基金项目: 国家自然科学基金(12072219,12272254);山西省自然科学研究面上项目(202203021211170);海安太原理工大学先进制造与智能装备产业研究院开放研发项目(2023HA-TYUTKFYF016);山西省科技创新人才团队(领军)专项(202204051002006)
详细信息
    作者简介:

    刘嘉婧(1997-),女,硕士研究生,主要从事轻质材料冲击动力学行为研究.E-mail:liujiajing199709@163.com

    通讯作者:

    李世强(1986-),男,博士,副教授,主要从事结构冲击动力学行为研究. E-mail:lishiqiang@tyut.edu.cn

  • 中图分类号: O521.9; O347.1

Hybrid Design of Triply Periodic Minimal Surface Structure and Its Mechanical Behavior under Impact Loading

  • 摘要: 三周期极小曲面(triply periodic minimal surface,TPMS)结构材料作为一种高孔隙率和高能量吸收效率的多孔介质,在许多领域得到广泛应用。以Gyroid和IWP结构作为设计基元,利用Sigmoid函数构建圆柱形过渡层,将外层IWP结构与内层Gyroid结构连接,设计了内外嵌套的GIP混合胞元结构。通过选择性激光熔融技术打印了Gyroid结构、IWP结构和GIP混合结构试样,并利用直撞式霍普金森杆对其进行了实验研究。结合LS-DYNA软件进行了更大冲击速度范围的数值模拟,分析了试件的变形演化过程和动态应力-应变关系。结果表明:结构的初始峰值应力和比吸能表现出不同程度的应变率敏感性。与Gyroid和IWP结构相比,GIP混合结构材料的应力-应变曲线表现出更明显的应变硬化趋势和更强的能量吸收能力。相较于GIP-1结构(冲击方向与圆柱形过渡层轴线方向相同),随着冲击速度的提高,GIP-2结构(冲击方向与圆柱形过渡层轴线方向垂直)具有更低的初始峰值应力和更大的比吸能,因而具有更优异的抗冲击性能。

     

  • 图  2种TPMS单胞构型

    Figure  1.  Single-cell configurations of two TPMSs

    图  水平集常数与相对密度的关系

    Figure  2.  Level set constants versus relative densities

    图  试件的几何模型

    Figure  3.  Geometric modeling of the specimens

    图  SLM打印试样

    Figure  4.  SLM printed specimens

    图  SLM打印标准件在单轴拉伸下的应力-应变曲线

    Figure  5.  Stress-strain curves of SLM-printed standard parts in uniaxial tension

    图  直撞式霍普金森杆实验布局

    Figure  6.  Direct impact Hopkinson bar experiment setup

    图  实验与数值模拟验证

    Figure  7.  Experimental and numerical simulation validation

    图  50 m/s冲击加载下单一结构和混合结构的实验与模拟变形模态

    Figure  8.  Deformation modes of experiment and simulation for single and hybrid structures under 50 m/s impact loading

    图  50 m/s冲击加载下GIP-1结构的1/2有限元模型剖面

    Figure  9.  1/2 finite element model section of GIP-1 structure at 50 m/s impact loading

    图  10  不同加载速度下结构的应力-应变曲线

    Figure  10.  Stress-strain curves of structures with different loading velocities

    图  11  单一结构和混合结构的能量吸收效率曲线和密实化应变

    Figure  11.  Energy absorption efficiency curves and densification strains for single structures and hybrid structures

    图  12  加载速度对初始峰值应力和比吸能的影响

    Figure  12.  Effect of loading velocity on initial peak stress and specific energy absorption

    图  13  加载速度对归一化参数的影响

    Figure  13.  Effect of loading velocity on normalized parameters

    表  1  测试试样的质量

    Table  1.   Masses of test specimens

    Specimen Designed
    mass/g
    Specimen
    mass/g
    Mass
    deviation/%
    Designed relative
    density/%
    Relative density
    of specimen/%
    Relative density
    deviation/%
    Gyroid-1 38.96 40.52 4.00 36 37.43 3.97
    Gyroid-2 38.96 40.35 3.56 36 37.27 3.52
    IWP-1 38.96 40.21 3.20 36 37.14 3.16
    IWP-2 38.96 40.12 2.97 36 37.06 2.94
    GIP-1 38.96 40.65 4.33 36 37.55 4.30
    GIP-2 38.96 40.37 3.61 36 37.29 3.58
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出版历程
  • 收稿日期:  2024-04-03
  • 修回日期:  2024-04-23
  • 录用日期:  2024-06-19
  • 网络出版日期:  2024-08-13
  • 刊出日期:  2024-09-29

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