外部爆炸载荷下表面粗糙度对45钢柱壳剪切带行为的影响

杨智程 刘龙飞 刘炼煌 殷鹏志 吴志强

杨智程, 刘龙飞, 刘炼煌, 殷鹏志, 吴志强. 外部爆炸载荷下表面粗糙度对45钢柱壳剪切带行为的影响[J]. 高压物理学报, 2022, 36(4): 044106. doi: 10.11858/gywlxb.20220506
引用本文: 杨智程, 刘龙飞, 刘炼煌, 殷鹏志, 吴志强. 外部爆炸载荷下表面粗糙度对45钢柱壳剪切带行为的影响[J]. 高压物理学报, 2022, 36(4): 044106. doi: 10.11858/gywlxb.20220506
YANG Zhicheng, LIU Longfei, LIU Lianhuang, YIN Pengzhi, WU Zhiqiang. Effect of Surface Roughness on Shear Band Behavior of 45 Steel Cylindrical Shell under External Explosion Load[J]. Chinese Journal of High Pressure Physics, 2022, 36(4): 044106. doi: 10.11858/gywlxb.20220506
Citation: YANG Zhicheng, LIU Longfei, LIU Lianhuang, YIN Pengzhi, WU Zhiqiang. Effect of Surface Roughness on Shear Band Behavior of 45 Steel Cylindrical Shell under External Explosion Load[J]. Chinese Journal of High Pressure Physics, 2022, 36(4): 044106. doi: 10.11858/gywlxb.20220506

外部爆炸载荷下表面粗糙度对45钢柱壳剪切带行为的影响

doi: 10.11858/gywlxb.20220506
基金项目: 国家自然科学基金(11772127,51704112)
详细信息
    作者简介:

    杨智程(1996-),男,硕士,主要从事冲击动力学研究. E-mail:444356771@qq.com

    通讯作者:

    刘龙飞(1975-),男,博士,教授,主要从事冲击动力学研究. E-mail:lfliu1@hnust.cn

  • 中图分类号: O347; O521.2

Effect of Surface Roughness on Shear Band Behavior of 45 Steel Cylindrical Shell under External Explosion Load

  • 摘要: 通过厚壁圆筒爆轰坍塌实验和有限元数值模拟,研究了45钢柱壳内壁表面粗糙度对其剪切带行为的影响。实验结果表明:外爆加载下,金属柱壳内壁表面粗糙度显著改变试样剪切带的成核位置和数量;当柱壳内壁表面粗糙度增大时,剪切带的数量和长度均增加,部分剪切带的扩展速度也增大;而当柱壳内壁表面的峰谷单元的平均宽度减小时,其剪切带的成核点数量增加,相邻剪切带之间的相互作用增强。有限元模拟和分析结果表明,柱壳中的最大剪切应力产生于柱壳内壁表面峰谷单元的谷底两侧,表面粗糙度的增大和峰谷单元平均宽度的减小均会提升柱壳内表面的剪切应力,促进柱壳中剪切带的成核和扩展,进而导致剪切带成核数量增多,主剪切带发展加快,剪切带屏蔽效应增强。

     

  • 图  45钢样品的粗糙度轮廓线

    Figure  1.  Roughness contour line of 45 steel sample

    图  45钢圆管的表面形貌

    Figure  2.  Surface morphology of 45 steel cylindrical shells

    图  TWC实验装置

    Figure  3.  Thick-walled cylinder experimental device

    图  表面粗糙度的二维模型

    Figure  4.  Two dimensional model of surface roughness

    图  不同应变下柱壳截面的宏观图像

    Figure  5.  Macro picture of cylinder cross section under different strains

    图  不同表面粗糙度样品的剪切带分布(εeff=0.73±0.01)

    Figure  6.  Distribution of shear band of samples with different roughnesses (εeff=0.73±0.01)

    图  不同表面粗糙度样品的剪切带分布(εeff=1.22±0.01)

    Figure  7.  Distribution of shear band in samples with different roughnesses (εeff =1.22±0.01)

    图  Rz=10.0 μm时具有不同表面粗糙度峰谷单元平均宽度的45钢柱壳的等效塑性应变云图(εeff=0.66)

    Figure  8.  Equivalent plastic strain nephogram of 45 steel cylindrical shell with different average widths of peak valley element (Rsm) of surface roughnesses at Rz=10.0 μm (εeff=0.66)

    图  Rz=50.0 μm时具有不同表面粗糙度峰谷单元平均宽度的45钢柱壳等效塑性应变云图(εeff=0.66)

    Figure  9.  Equivalent plastic strain nephogram of 45 steel cylindrical shell with different average widths of peak valley element (Rsm ) of surface roughnesses at Rz=50.0 μm (εeff=0.66)

    图  10  Rz=10.0 μm时具有不同表面粗糙度峰谷单元平均宽度的45钢柱壳的等效塑性应变云图(εeff=1.15)

    Figure  10.  Equivalent plastic strain nephogram of 45 steel cylindrical shell with different average widths of peak valley element (Rsm ) of surface roughnesses at Rz=10.0 μm (εeff=1.15)

    图  11  Rz=50.0 μm时具有不同表面粗糙度峰谷单元平均宽度的45钢柱壳的等效塑性应变云图(εeff =1.15)

    Figure  11.  Equivalent plastic strain nephogram of 45 steel cylindrical shell with different average widths of peak valley element (Rsm) of surface roughnesses at Rz=50.0 μm (εeff=1.15)

    图  12  表面粗糙度对柱壳内表面剪切应力的影响(Rsm=157 μm)

    Figure  12.  Effect of surface roughness on internal surface shear stress of cylindrical shell (Rsm=157 μm)

    图  13  表面粗糙度峰谷单元平均宽度对柱壳内表面剪切应力的影响(Rz=50.0 μm)

    Figure  13.  Effect of surface roughness peak valley element average width on internal surface shear stress of cylindrical shell (Rz=50.0 μm)

    表  1  45钢的化学成分

    Table  1.   Chemical composition of 45 steel %

    CSiMnSPNiCrCuFe
    0.440.230.560.0120.0140.040.060.07Rest
    下载: 导出CSV

    表  2  实验装置的尺寸

    Table  2.   Size of experimental device

    ComponentInternal diameter/mmOuter diameter/mmLength/mmThickness/mm
    Copper stopper1115672
    Specimen1521673
    Copper driver2125672
    Explosive257324
    下载: 导出CSV

    表  3  表面粗糙度模拟参数

    Table  3.   Simulation parameters of surface roughness

    No.Rz/μmRsm/μm
    110471, 235, 157
    250471, 235, 157
    下载: 导出CSV

    表  4  材料的Johnson-Cook本构模型参数[41]

    Table  4.   Johnson-Cook constitutive parameters of materials[41]

    MaterialA/MPaB/MPaCnm
    45 steel5073200.0640.281.06
    Oxygen free copper902920.0250.311.09
    下载: 导出CSV

    表  5  材料的Johnson-Cook失效模型参数

    Table  5.   Johnson-Cook failure parameters of materials

    MaterialD1D2D3D4D5
    45 steel0.100.761.570.005−0.84
    Oxygen free copper0.453.44−2.120.0021.09
    下载: 导出CSV

    表  6  TNT的JWL状态方程参数[42]

    Table  6.   Parameters of JWL equation of state of TNT[42]

    ATNT/GPaBTNT/GPaR1R2ωE/(GJ·m−3)pCJ/GPaρ/(g·cm−3)D/(km·s−1)
    371.23.2314.510.950.37.0211.636.93
    下载: 导出CSV
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出版历程
  • 收稿日期:  2022-01-27
  • 修回日期:  2022-03-02
  • 网络出版日期:  2022-07-19
  • 刊出日期:  2022-07-28

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