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中低速压缩加载下不同截面构型复合材料薄壁结构吸能特性及失效分析

张欣玥 惠旭龙 葛宇静 舒挽 白春玉 刘小川

张欣玥, 惠旭龙, 葛宇静, 舒挽, 白春玉, 刘小川. 中低速压缩加载下不同截面构型复合材料薄壁结构吸能特性及失效分析[J]. 爆炸与冲击, 2022, 42(6): 063102. doi: 10.11883/bzycj-2021-0347
引用本文: 张欣玥, 惠旭龙, 葛宇静, 舒挽, 白春玉, 刘小川. 中低速压缩加载下不同截面构型复合材料薄壁结构吸能特性及失效分析[J]. 爆炸与冲击, 2022, 42(6): 063102. doi: 10.11883/bzycj-2021-0347
ZHANG Xinyue, HUI Xulong, GE Yujing, SHU Wan, BAI Chunyu, LIU Xiaochuan. Energy absorption characteristics and failure analysis of composite thin-walled structures with different cross-sectional configurations under medium- and low-speed compression loading[J]. Explosion And Shock Waves, 2022, 42(6): 063102. doi: 10.11883/bzycj-2021-0347
Citation: ZHANG Xinyue, HUI Xulong, GE Yujing, SHU Wan, BAI Chunyu, LIU Xiaochuan. Energy absorption characteristics and failure analysis of composite thin-walled structures with different cross-sectional configurations under medium- and low-speed compression loading[J]. Explosion And Shock Waves, 2022, 42(6): 063102. doi: 10.11883/bzycj-2021-0347

中低速压缩加载下不同截面构型复合材料薄壁结构吸能特性及失效分析

doi: 10.11883/bzycj-2021-0347
基金项目: 民机专项科研(MJ-2017-F-15)
详细信息
    作者简介:

    张欣玥(1994- ),女,硕士,工程师,nwpuzhangxinyue@163.com

    通讯作者:

    刘小川(1983- ),男,博士,研究员,asri02@163.com

  • 中图分类号: O347

Energy absorption characteristics and failure analysis of composite thin-walled structures with different cross-sectional configurations under medium- and low-speed compression loading

  • 摘要: 为研究开剖面复合材料薄壁吸能结构的吸能特性,基于高速液压伺服试验系统,开展了开剖面复合材料薄壁结构轴向压缩试验,分析了截面构型、截面长宽比、触发模式及加载速度对其吸能特性的影响,揭示了其在压溃过程中的失效及吸能机理。研究结果表明,复合材料薄壁结构压溃过程中主要通过材料弯曲、分层、剪切破坏以及压溃区之间的摩擦吸能。截面构型对其吸能特性影响显著,其中,帽形及Ω形试件的平均压溃载荷较C形试件分别高出14.1%和14.6%,比吸能较C形试件分别高出14.3%和14.8%;截面长宽比对复合材料薄壁结构吸能特性的影响不如截面构型明显;触发模式主要影响吸能结构的初始压溃阶段,在降低峰值载荷方面,C形试件采用45°倒角触发效果更好,帽形试件采用15°尖顶触发效果更好;当加载速度从0.01 m/s提高到1 m/s时,C形、帽形及Ω形试件的平均压溃载荷分别下降了6.1%、10.9%和6.1%,比吸能分别下降了6.2%、11.0%和6.2%。
  • 图  1  试件横截面尺寸(单位:mm)

    Figure  1.  Cross-sectional dimensions of specimens (unit: mm)

    图  2  试件照片

    Figure  2.  Photos of the specimens

    图  3  高速液压伺服试验机

    Figure  3.  High speed hydraulic servo testing machine

    图  4  试件夹持方式

    Figure  4.  Clamping method of the specimens

    图  5  典型复合材料吸能试件渐进压溃载荷-位移曲线

    Figure  5.  Typical progressive crushing load-displacement curve of composite energy-absorbing specimens

    图  6  不同截面构型试件压溃过程中的典型载荷-位移曲线

    Figure  6.  Typical force-displacement curves of the specimenswith different cross-section shapes

    图  7  不同截面构型试件吸能特性对比

    Figure  7.  Comparison of energy-absorption characteristics of the specimens with different cross-section shapes

    图  8  不同截面构型试件加载过程中的破坏情况(加载速度1 m/s)

    Figure  8.  Failure modes of the specimens with different cross-section shapes during loading (loading speed: 1 m/s)

    图  9  加载速度为1 m/s时不同截面构型试件的破坏形貌

    Figure  9.  Failure morphology of the specimens with different cross-section configurations under loading speed of 1 m/s

    图  10  不同截面长宽比试件压溃过程中的典型载荷-位移曲线

    Figure  10.  Typical force-displacement curves of the specimens with different section aspect ratios

    图  11  不同长宽比试件吸能特性对比

    Figure  11.  Comparison of energy-absorption characteristics of the specimens with different section aspect ratios

    图  12  不同截面构型试件破坏形貌

    Figure  12.  Failure morphology of the specimens with different cross-section shapes

    图  13  不同触发模式试件典型载荷-位移曲线

    Figure  13.  Typical force-displacement curves of the specimens with different trigger methods

    图  14  不同触发模式试件吸能特性对比

    Figure  14.  Comparison of energy-absorption characteristics of the specimens with different trigger methods

    图  15  尖顶触发试件加载过程中破坏情况

    Figure  15.  Failure modes of the specimens with steeple trigger method

    图  16  不同加载速度下的典型载荷-位移曲线

    Figure  16.  Typical force-displacement curves of the specimens with different loading speeds

    图  17  不同加载速度的试件吸能特性对比

    Figure  17.  Comparison of energy-absorption characteristics of the specimens with different loading speeds

    图  18  不同构型试件比吸能随加载速度变化情况

    Figure  18.  Variation of specific energy absorption of the specimensof different section shapes with loading speed

    图  19  不同截面构型试件加载过程中破坏情况(加载速度0.01 m/s)

    Figure  19.  Failure modes of the specimens of different cross-section shapes during loading (loading speed: 0.01 m/s)

    图  20  加载速度为0.01 m/s时不同截面构型试件破坏形貌

    Figure  20.  Morphology of the specimens of different section shapes under loading speed of 0.01 m/s

    表  1  复合材料薄壁吸能结构压溃试验

    Table  1.   Composite thin-walled structures compression test matrix

    试件构型触发方式加载速度/(m∙s−1压缩行程内质量/g试验组数
    C1型倒角触发114.6803
    帽形倒角触发114.6783
    Ω形倒角触发114.6773
    C2型倒角触发114.6803
    C3型倒角触发114.6803
    C1型尖顶触发113.5073
    帽形尖顶触发114.0293
    C1型倒角触发0.0114.6803
    C1型倒角触发0.114.6803
    帽形倒角触发0.0114.6783
    帽形倒角触发0.114.6783
    Ω形倒角触发0.0114.6773
    Ω形倒角触发0.114.6773
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出版历程
  • 收稿日期:  2021-08-17
  • 录用日期:  2022-03-17
  • 修回日期:  2022-01-24
  • 网络出版日期:  2022-04-06
  • 刊出日期:  2022-06-24

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