钙质砂的准一维应变压缩试验研究

文祝 邱艳宇 紫民 赵章泳 王明洋

文祝, 邱艳宇, 紫民, 赵章泳, 王明洋. 钙质砂的准一维应变压缩试验研究[J]. 爆炸与冲击, 2019, 39(3): 033101. doi: 10.11883/bzycj-2018-0015
引用本文: 文祝, 邱艳宇, 紫民, 赵章泳, 王明洋. 钙质砂的准一维应变压缩试验研究[J]. 爆炸与冲击, 2019, 39(3): 033101. doi: 10.11883/bzycj-2018-0015
WEN Zhu, QIU Yanyu, ZI Min, ZHAO Zhangyong, WANG Mingyang. Experimental study on quasi-one-dimensional strain compression of calcareous sand[J]. Explosion And Shock Waves, 2019, 39(3): 033101. doi: 10.11883/bzycj-2018-0015
Citation: WEN Zhu, QIU Yanyu, ZI Min, ZHAO Zhangyong, WANG Mingyang. Experimental study on quasi-one-dimensional strain compression of calcareous sand[J]. Explosion And Shock Waves, 2019, 39(3): 033101. doi: 10.11883/bzycj-2018-0015

钙质砂的准一维应变压缩试验研究

doi: 10.11883/bzycj-2018-0015
基金项目: 岩土力学与工程国家重点实验室资助课题(Z017015)
详细信息
    作者简介:

    文 祝(1990- ),男,博士研究生, wenzhu@njust.edu.cn

    通讯作者:

    赵章泳(1992- ),男,博士研究生, zhaozhangyong1@126.com

  • 中图分类号: O341

Experimental study on quasi-one-dimensional strain compression of calcareous sand

  • 摘要: 利用$\varnothing ∅ $100 mm的Hopkinson压杆研究了不同预压力条件下,受侧限约束的钙质砂在500~800 s−1应变率范围、0~200 MPa压力范围内的动态力学特性,并利用HUT106D万能材料试验机研究了相同条件钙质砂在2×10−3 s−1应变率、0~120 MPa压力范围内的静态力学特性。研究发现,当再次加载超过一定值后,预压力对钙质砂力学特性的影响不大;Tait物态方程可以描述钙质砂的静态容变关系及高压下的动态容变关系;钙质砂的体积压缩过程存在应变率效应。
  • 图  1  钙质砂样

    Figure  1.  Calcareous sands

    图  2  钙质砂颗分曲线

    Figure  2.  Particle distribution curve of calcareous sands

    图  3  一维压缩应力应变示意图

    Figure  3.  One dimensional compressive of stress-strain

    图  4  钙质砂装样示意图

    Figure  4.  Calcareous sand sample

    图  5  静态试验示意图

    Figure  5.  Static test

    图  6  SHPB系统示意图

    Figure  6.  The SHPB test system

    图  7  SHPB系统上的钙质砂试样

    Figure  7.  Calcareous sand sample on SHPB system

    图  8  典型原始波形图

    Figure  8.  Typical original waveforms

    图  9  不同预压值工况下钙质砂的动态应力平衡状态

    Figure  9.  Dynamic stress balance state of calcareous sand under different preloading conditions

    图  10  静态试验的应力应变关系

    Figure  10.  Stress-strain relationship of the static test

    图  11  SHPB试验的应力应变关系

    Figure  11.  Stress-strain relationship of SHPB test

    图  12  径向应力和轴向透射应力

    Figure  12.  Comparison of radial stress and axial transmission stress

    图  13  侧压力系数

    Figure  13.  Side pressure coefficient

    图  14  平均应力和体积应变的关系

    Figure  14.  The relationship between the average stress and the volumetric strain

    表  1  SHPB试验工况表

    Table  1.   SHPB test table

    工况质量/g初始长度/mm预压力/MPa压后长度/mm压后密度/(g·cm−3)子弹速度/(m·s−1)应变率/s−1
    112512.6012.61.2637.1778
    212512.6012.61.263 7.13797
    325025.22019.71.61615.61513
    425025.22019.71.61615.59506
    525025.21021.31.49415.71569
    625025.21021.31.49415.68551
    725025.22019.41.64121.55647
    825025.22019.41.64121.52626
    925025.23018.41.73 21.41590
    1025025.23018.41.73 21.38561
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出版历程
  • 收稿日期:  2018-01-11
  • 修回日期:  2018-03-22
  • 网络出版日期:  2019-03-25
  • 刊出日期:  2019-03-01

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