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六种高分子材料动静态力学特性和能量耗散

邢永杨 汪海波 王梦想 吕闹 程兵

邢永杨, 汪海波, 王梦想, 等. 六种高分子材料动静态力学特性和能量耗散[J]. 复合材料学报, 2024, 42(0): 1-12.
引用本文: 邢永杨, 汪海波, 王梦想, 等. 六种高分子材料动静态力学特性和能量耗散[J]. 复合材料学报, 2024, 42(0): 1-12.
XING Yongyang, WANG Haibo, WANG Mengxiang, et al. Dynamic and static mechanical properties and energy dissipation of six polymer materials[J]. Acta Materiae Compositae Sinica.
Citation: XING Yongyang, WANG Haibo, WANG Mengxiang, et al. Dynamic and static mechanical properties and energy dissipation of six polymer materials[J]. Acta Materiae Compositae Sinica.

六种高分子材料动静态力学特性和能量耗散

基金项目: 安徽省爆破器材与技术工程实验室开放基金重点项目(AHBP2022A-02);矿山地下工程教育部工程研究中心开放基金(JYBGCZX2022104)
详细信息
    通讯作者:

    汪海波,博士,教授,博士生导师,研究方向为爆破理论与技术,冲击动力学 E-mail:wanghb_aust@163.com

  • 中图分类号: TB324

Dynamic and static mechanical properties and energy dissipation of six polymer materials

Funds: Open Foundation of Anhui Engineering Laboratory of Explosive Materials and Technology (AHBP2022A-02); Open Foundation of the Engineering Research Center of the Ministry of Education for Mining Underground Engineering (JYBGCZX2022104)
  • 摘要: 为探究不同高分子材料作为聚能管管材对于聚能爆破的影响,利用电液伺服压力机和直径50 mm的分离式霍普金森压杆分别开展不同高分子材料在准静态下的单轴抗压试验,以及在冲击荷载作用下的单轴压缩试验,对其动静态力学性能、纵波波速、变形特征及能量耗散进行了研究。结果表明,不同高分子材料之间的波阻抗及准静态单轴抗压强度之间最大差值分别达到了42.5%和312.3%;在冲击荷载作用下,不同高分子材料的应力-应变曲线均在曲线末端出现了回弹现象,PVC材料的峰值应力在不同冲击气压下均为6种高分子材料中相对较高的;从对能量的透射、耗散率和单位质量耗散能方面分析,PVC材料的能量透射率是6种高分子材料中最高的,能量耗散和单位质量耗散能是最低的;从岩石爆破角度,引入吸收阻抗比与入射能进行拟合分析,PVC和PC材料的拟合曲线的相关系数相对较高,更符合炸药爆炸时能量传递的描述。最后,综合所有分析认为PVC材料是试验所用的6种高分子材料中最适合作为聚能管管材。

     

  • 图  1  采用的典型高分子材料试件

    Figure  1.  Typical polymer material specimens used

    PP—Polypropylene; PVC—Polyvinyl chloride; PA—Polyamide; PC—Polycarbonate; PE—Polyethylene; POM—Polyformaldehyde

    图  2  实测波形图

    Figure  2.  Actual waveform measurement

    图  3  SHPB测试系统结构示意图

    Figure  3.  Schematic diagram of SHPB test system structure

    图  4  单轴压缩试验下试件的应力特征:(a)应力-时间曲线、(b)峰值应力

    Figure  4.  Stress characteristics of specimens under uniaxial compression experiment. (a) Stress-strain curve; (b) Peak stress

    图  5  不同高分子材料试件的应力-应变曲线:(a) 0.4 MPa;(b) 0.6 MPa;(c) 0.8 MPa

    Figure  5.  Stress-strain curves of specimens made of different polymer materials: (a) 0.4 MPa; (b) 0.6 MPa; (c) 0.8 MPa

    图  6  不同高分子材料试件的(a)应变率、(b)动态抗压强度、(c)塑性应变

    Figure  6.  Dynamic parameters of specimens made of different polymer materials: (a) Strain rate; (b) Dynamic compressive strength; (c) Plastic strain

    图  7  韧性计算示意图和不同高分子材料试件的韧性

    Figure  7.  Schematic diagram of toughness calculation and toughness of specimens made of different polymer materials

    图  8  SHPB压缩试验下冲击气压对各试件能量的影响:(a)反射能;(b)透射能;(c)吸收能

    Figure  8.  Influence of shock pressure on energy of specimens under SHPB compression experiment: (a) Reflection energy; (b) Transmission energy; (c) Absorption energy

    图  9  SHPB压缩试验下冲击气压对各试件耗能的影响:(a)能量耗散率;(b)单位质量耗散能;(c)能量透射率

    Figure  9.  Analysis of impact pressure on energy consumption of specimens under SHPB compression experiment: (a) Energy dissipation rate; (b) Energy dissipation per unit mass; (c) Energy transmittance

    图  10  SHPB压缩试验下各试件单位质量耗散能和吸收阻抗比与入射能拟合分析

    Figure  10.  Fitting analysis of dissipative energy per unit mass and absorption impedance ratio with incident energy of specimens under SHPB compression test

    表  1  试件的密度和纵波波速测试结果

    Table  1.   Density and p-wave velocity test results of the specimens

    Specimen
    name
    Density/
    (g·cm−3)
    P-wave
    velocity/(m·s−1)
    Wave impedance/
    (g·cm−2·s−1)
    PC 1.186 2096 248586
    PE 0.952 2421 230479
    POM 1.416 2257 319591
    PP 0.906 2488 225413
    PVC 1.486 2162 321273
    PA 0.903 2565 231620
    下载: 导出CSV

    表  2  不同试件加载后的尺寸变化

    Table  2.   Dimensional changes of different specimens after loading

    Specimen name PC PE POM PP PVC PA
    Before the experiment Height/mm 100.12 99.92 100.02 99.92 99.90 99.4
    Diameter/mm 49.92 50.02 49.92 50.06 49.98 50.12
    After the experiment Height/mm 98.92 95.80 93.78 96.64 99.42 97.06
    Diameter/mm 50.02 51.26 52.08 51.68 50.18 51.16
    Height difference ΔΗ/mm 1.20 4.12 6.24 3.28 0.48 2.38
    Diameter Difference Δd/mm −0.10 −1.24 −2.16 −1.62 −0.20 −1.04
    下载: 导出CSV

    表  3  不同高分子材料冲击试验结果

    Table  3.   Impact experiment results of different polymer materials

    Specimen name Impact
    pressure/MPa
    Strain
    rate/s−1
    Dynamic compressive
    strength/MPa
    Plastic strain Incident energy/J Reflected energy/J Transmitted energy/J Absorbed energy/J
    PC 0.4 246.2 36.07 3.12 105.79 86.16 8.86 10.77
    PC 0.6 274.9 57.39 3.61 168.61 122.24 22.86 23.51
    PC 0.8 306.3 50.94 4.62 247.69 192.05 17.86 37.78
    PE 0.4 202.5 32.14 2.94 95.60 73.59 8.04 13.97
    PE 0.6 267.9 36.95 3.85 167.02 126.09 10.23 30.7
    PE 0.8 325.2 40.34 4.74 219.87 182.33 11.92 25.62
    POM 0.4 226.5 61.54 2.65 107.23 71.85 24.26 11.12
    POM 0.6 284.2 72.12 3.58 175.08 126.13 31.42 17.53
    POM 0.8 307.5 89.17 3.96 241.24 157.60 49.27 34.37
    PP 0.4 216.9 41.59 2.96 100.23 77.73 9.21 13.29
    PP 0.6 255.2 77.97 3.07 177.12 105.19 39.44 32.49
    PP 0.8 292.7 83.93 3.79 218.56 141.44 42.69 34.43
    PVC 0.4 219.0 57.06 2.76 108.25 77.07 18.59 12.59
    PVC 0.6 260.7 85.00 3.17 185.88 111.02 44.26 30.6
    PVC 0.8 293.2 98.63 3.82 236.58 143.30 58.43 34.85
    PA 0.4 213.4 59.31 2.67 108.08 70.95 18.39 18.74
    PA 0.6 253.1 70.46 3.32 161.49 105.63 31.67 24.19
    PA 0.8 283.0 77.50 3.43 176.04 106.75 40.94 28.35
    下载: 导出CSV
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  • 收稿日期:  2024-01-16
  • 修回日期:  2024-02-24
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