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软基体混合胞孔材料的力学性能及抗多次冲击性能

陈松 习会峰 黄世清 王博伟 王小刚

陈松, 习会峰, 黄世清, 王博伟, 王小刚. 软基体混合胞孔材料的力学性能及抗多次冲击性能[J]. 爆炸与冲击, 2022, 42(6): 063104. doi: 10.11883/bzycj-2021-0283
引用本文: 陈松, 习会峰, 黄世清, 王博伟, 王小刚. 软基体混合胞孔材料的力学性能及抗多次冲击性能[J]. 爆炸与冲击, 2022, 42(6): 063104. doi: 10.11883/bzycj-2021-0283
CHEN Song, XI Huifeng, HUANG Shiqing, WANG Bowei, WANG Xiaogang. Mechanical properties of the mixed cellular material with soft matrix and its response to repeated impacts[J]. Explosion And Shock Waves, 2022, 42(6): 063104. doi: 10.11883/bzycj-2021-0283
Citation: CHEN Song, XI Huifeng, HUANG Shiqing, WANG Bowei, WANG Xiaogang. Mechanical properties of the mixed cellular material with soft matrix and its response to repeated impacts[J]. Explosion And Shock Waves, 2022, 42(6): 063104. doi: 10.11883/bzycj-2021-0283

软基体混合胞孔材料的力学性能及抗多次冲击性能

doi: 10.11883/bzycj-2021-0283
基金项目: 国家自然科学基金(12172151);广东省自然科学基金(2020A1515011064)
详细信息
    作者简介:

    陈 松(1996-  ),男,硕士研究生,1241658201@qq.com

    通讯作者:

    习会峰(1980-  ),女,博士,副教授,xihuifeng@jnu.edu.cn

  • 中图分类号: O383

Mechanical properties of the mixed cellular material with soft matrix and its response to repeated impacts

  • 摘要: 为了探索具有优异吸能性能的软基体混合胞孔材料的力学性能,研究该类材料在多次冲击下的冲击响应和材料的可恢复性,对一种软基体混合胞孔材料—人工软骨仿生超材料(artificial cartilage foam,ACF)进行了不同速度下的单轴拉伸和压缩实验,得到了ACF材料在不同应变率条件下的应力-应变曲线。并利用落锤冲击实验机对ACF材料和另一种软基体混合胞孔材料—发泡聚丙烯材料(expanded polypropylene,EPP)进行了多次冲击下的对比测试,得到了2种材料在单次和多次冲击下的动力学响应。实验结果表明:ACF材料是一种应变率敏感的材料,随着应变率的提升,材料的弹性模量、抗拉强度和抗压强度均逐渐提高;在50 J 冲击能量作用下,ACF材料能够吸收96%以上的冲击能量,远高于EPP材料的70%,ACF材料具有更加优异的吸能性能;5次冲击后ACF材料的最大峰值力、最大变形量和吸能能力几乎不变。相比于EPP材料,ACF材料有良好的可恢复性,且具有稳定的多次抗冲击能力。这些研究为软基体混合胞孔材料在多次冲击防护中的应用提供了实验依据。
  • 图  1  人工软骨仿生超材料及其防护产品

    Figure  1.  Artificial cartilage foam material and its protection products

    图  2  人工软骨仿生超材料的表面微观结构形态

    Figure  2.  Microstructures of artificial cartilage foam material

    图  3  实验试件(单位:mm)

    Figure  3.  Experimental specimens (unit: mm)

    图  4  实验设备

    Figure  4.  Experimental equipments

    图  5  单轴实验曲线

    Figure  5.  Uniaxial experimental curves

    图  6  落锤冲击实验

    Figure  6.  Drop-weight impact experiment

    图  7  单次冲击力-位移曲线

    Figure  7.  Force-displacement curves under single impact

    图  8  单次冲击速度-位移曲线

    Figure  8.  Velocity-displacement curves under single impact

    图  9  单次冲击能量-位移曲线

    Figure  9.  Energy-displacement curves under single impact

    图  10  多次冲击力-位移曲线

    Figure  10.  Force-displacement curves under repeated impacts

    图  11  多次冲击速度-位移曲线

    Figure  11.  Velocity-displacement curves under repeated impacts

    图  12  多次冲击能量-位移曲线

    Figure  12.  Energy-displacement curves under repeated impacts

    表  1  不同应变率下人工软骨仿生超材料的拉伸强度和断裂应变

    Table  1.   Tensile strength and breaking strain of the artificial cartilage foam material in tensile experiments at different strain rates

    应变率/s−1拉伸强度/MPa断裂应变
    10−10.9101.468
    402.0461.381
    1202.8951.131
    1602.9690.772
    下载: 导出CSV

    表  2  不同应变率下压缩实验的平台应力和弹性模量

    Table  2.   Plateau stresses and elastic moduli obtained in compression experiments at different strain rates

    应变率/s−1弹性模量/MPa平台应力/MPa
    10−1 1.0060.30
    5023.8962.22
    10034.0693.75
    15074.5224.50
    下载: 导出CSV

    表  3  ACF和EPP材料在不同冲击次数下的能量吸收

    Table  3.   Energy absorption of ACF and EPP materials under different impact times

    No.ACF材料EPP材料
    吸能/J吸能率/%吸能率下降/%吸能/J吸能率/%吸能率下降/%
    144.797.131.571.6
    245.296.60.526.260.011.6
    345.096.40.725.658.213.4
    445.096.70.423.852.519.1
    545.196.70.425.156.315.3
    下载: 导出CSV
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出版历程
  • 收稿日期:  2021-07-05
  • 修回日期:  2021-09-18
  • 网络出版日期:  2022-04-28
  • 刊出日期:  2022-06-24

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