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重组竹顺纹冲击力学性能研究

王明涛 卢玉斌 蔡雄峰 姜锡权 陈林碧

王明涛, 卢玉斌, 蔡雄峰, 姜锡权, 陈林碧. 重组竹顺纹冲击力学性能研究[J]. 爆炸与冲击, 2022, 42(4): 043102. doi: 10.11883/bzycj-2021-0260
引用本文: 王明涛, 卢玉斌, 蔡雄峰, 姜锡权, 陈林碧. 重组竹顺纹冲击力学性能研究[J]. 爆炸与冲击, 2022, 42(4): 043102. doi: 10.11883/bzycj-2021-0260
WANG Mingtao, LU Yubin, CAI Xiongfeng, JIANG Xiquan, CHEN Linbi. A study of impact mechanical properties of the bamboo scrimber along the grain[J]. Explosion And Shock Waves, 2022, 42(4): 043102. doi: 10.11883/bzycj-2021-0260
Citation: WANG Mingtao, LU Yubin, CAI Xiongfeng, JIANG Xiquan, CHEN Linbi. A study of impact mechanical properties of the bamboo scrimber along the grain[J]. Explosion And Shock Waves, 2022, 42(4): 043102. doi: 10.11883/bzycj-2021-0260

重组竹顺纹冲击力学性能研究

doi: 10.11883/bzycj-2021-0260
基金项目: 福建省科学院科学技术合作计划(STS)(2020T3018)
详细信息
    作者简介:

    王明涛(1996- ),男,硕士研究生,s1908091@st.nuc.edu.cn

    通讯作者:

    卢玉斌(1980- ),男,博士,研究员,luyubin@fjirsm.ac.cn

  • 中图分类号: O347.3; TU531.3

A study of impact mechanical properties of the bamboo scrimber along the grain

  • 摘要: 重组竹是一种新型竹基复合材料,其力学性能优于落叶松等木材。为评价重组竹在动态加载下的顺纹抗冲击力学性能,以密度1.06 g/cm3、含水率8.52%、龄期3~5年的毛竹基重组竹为研究对象,通过准静态单轴压缩和循环加卸载以及动态加载实验,研究了重组竹加载变形过程、各项力学性能指标以及对应变率的敏感性。结果表明:重组竹顺纹压缩过程可以分为弹性变形和弹塑性变形阶段,破坏类型为延性破坏,其各项强度指标随应变率的提高而提高,动态增长因子与应变率之间呈现线性关系,斜率为0.0024;重组竹压缩过程中的应变比能与应变之间呈线性关系,且随应变率的增长而增大,证明其吸能能力随着应变率的增大而提高。实验结果证明,重组竹顺纹具有良好的抗冲击力学性能和显著的应变率效应。
  • 图  1  重组竹试样制备

    Figure  1.  Manufacturing of bamboo scrimber samples for tests

    图  2  MTS材料试验机和SHPB实验平台

    Figure  2.  MTS testing machine and SHPB experimental platform

    图  3  佩戴保护套筒空打波形

    Figure  3.  Wave profiles with protection

    图  4  应力平衡情况

    Figure  4.  Stress equilibrium situation

    图  5  恒定应变率情况

    Figure  5.  Constant strain rate situation

    图  6  重组竹在不同应变率下的应力-应变曲线

    Figure  6.  Stress-strain curves of bamboo scrimber under different strain rates

    图  7  重组竹准静态压缩的3个变形阶段

    Figure  7.  Three deformation stages of bamboo scrimber under quasi-static compression

    图  8  循环加卸载的应力-应变曲线

    Figure  8.  Stress-strain curves of cyclic loading and unloading tests

    图  9  重组竹在冲击加载下的破坏形态

    Figure  9.  Failure morphology of bamboo scrimber under impact loading

    图  10  重组竹在不同应变率下的平台应力

    Figure  10.  The plateau stress of bamboo scrimber under different strain rates

    图  11  重组竹在不同应变率下的动态增强因子

    Figure  11.  The dynamic increase factor of bamboo scrimber under different strain rates

    图  12  重组竹在不同应变率下的应变比能

    Figure  12.  The strain energy densities of bamboo scrimber under different strain rates

    表  1  重组竹在不同应变率下的动态力学参数

    Table  1.   Dynamic mechanical parameters of bamboo scrimber under different strain rates

    编号应变率/s−1屈服强度/MPa压缩破坏强度/MPa平台应力/MPa应变比能/(MJ·m−3应力平衡因子η/%恒应变率因子κ/%
    QX1-1010−463.1971.6868.355.72
    变异系数[0][7.05%][7.60%][7.44%][7.69%]
    DX-01335116.69135.03132.088.7395.9126.10
    DX-02354120.03131.41129.789.8395.5625.06
    DX-03356122.24134.98134.609.5897.6030.00
    平均值348119.65133.81132.159.38
    变异系数[3.33%][2.34%][1.55%][1.82%][6.15%]
    DX-04430121.61142.72141.489.3495.0126.88
    DX-05450129.60135.14134.4211.8395.3429.55
    DX-06480126.10146.22140.0612.7896.5621.34
    平均值449125.77141.36138.6511.32
    变异系数[4.53%][2.60%][3.27%][2.20%][12.82%]
    DX-07502136.27143.29141.8214.8095.3526.45
    DX-08512136.04143.43139.9714.1897.2827.65
    DX-09542133.05142.95140.4014.8895.5528.86
    平均值519135.12143.22140.7314.62
    变异系数[3.28%][1.09%][0.14%][0.56%][2.14%]
    DX-10608164.84174.16170.8921.1296.8725.65
    DX-11642154.72164.12160.2020.4698.5523.53
    DX-12654165.39174.02171.6620.9295.9527.68
    平均值635161.65170.77167.5820.83
    变异系数[3.07%][3.03%][2.75%][3.12%][1.33%]
    下载: 导出CSV
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出版历程
  • 收稿日期:  2021-06-28
  • 修回日期:  2021-11-09
  • 网络出版日期:  2022-02-14
  • 刊出日期:  2022-05-09

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