花岗岩粗糙表面动摩擦形态演化

张磊 王文帅 苗春贺 单俊芳 王鹏飞 徐松林

张磊, 王文帅, 苗春贺, 单俊芳, 王鹏飞, 徐松林. 花岗岩粗糙表面动摩擦形态演化[J]. 高压物理学报, 2021, 35(3): 031201. doi: 10.11858/gywlxb.20200640
引用本文: 张磊, 王文帅, 苗春贺, 单俊芳, 王鹏飞, 徐松林. 花岗岩粗糙表面动摩擦形态演化[J]. 高压物理学报, 2021, 35(3): 031201. doi: 10.11858/gywlxb.20200640
ZHANG Lei, WANG Wenshuai, MIAO Chunhe, SHAN Junfang, WANG Pengfei, XU Songlin. Rough Surface Morphology of Granite Subjected to Dynamic Friction[J]. Chinese Journal of High Pressure Physics, 2021, 35(3): 031201. doi: 10.11858/gywlxb.20200640
Citation: ZHANG Lei, WANG Wenshuai, MIAO Chunhe, SHAN Junfang, WANG Pengfei, XU Songlin. Rough Surface Morphology of Granite Subjected to Dynamic Friction[J]. Chinese Journal of High Pressure Physics, 2021, 35(3): 031201. doi: 10.11858/gywlxb.20200640

花岗岩粗糙表面动摩擦形态演化

doi: 10.11858/gywlxb.20200640
基金项目: 高压物理与地震科技联合实验室开放基金(2019HPPES01);国家自然科学基金(11672286,11872361);中石油与中科院重大战略合作项目(2015A-4812)
详细信息
    作者简介:

    张 磊(1991-),男,博士研究生,主要从事材料动态力学性能研究. E-mail:zl21@ustc.edu.cn

    通讯作者:

    徐松林(1971-),男,博士,研究员,博士生导师,主要从事冲击下材料的动态响应研究. E-mail:slxu99@ustc.edu.cn

  • 中图分类号: O341

Rough Surface Morphology of Granite Subjected to Dynamic Friction

  • 摘要: 冲击过程中岩石界面动摩擦特性对于地震滑移等现象的研究有重要意义。基于分离式霍普金森压杆(SHPB)杆束技术对含倾斜界面的花岗岩进行冲击实验,分别采用光学显微镜和台阶仪,观测较大视场(毫米尺度)和较小视场(亚毫米尺度)下花岗岩界面粗糙形态。结果表明:微动滑移条件下,表面仍非常粗糙,没有大的凸起,但是对于局部初始较平滑的表面,冲击后由于表面的摩擦作用变得粗糙,很难观察到大位移滑移时的光滑滑移面。采用斜条型有限子群表示,结合微界面相对滑移磨损扩散的控制方程,建立岩石界面粗糙形态动力学演化的描述方法。初步结果验证了此方法的可行性,但需要结合深入的实验观测进行完善。研究结果对界面动摩擦演化过程及其机制的认识具有良好的参考意义。

     

  • 图  三维粗糙表面形态[15]

    Figure  1.  3D plot of the surface[15]

    图  SHPB杆束实验装置

    Figure  2.  SHPB bundle bars device

    图  微动摩擦性能

    Figure  3.  Properties of microscale dynamic friction

    图  微动摩擦过程中20°界面x方向的位移场演化

    Figure  4.  Evolution of x-displacement field of 20° surface during microscale dynamic friction

    图  30°界面在光学显微镜下的表面形态

    Figure  5.  Surface morphology of 30° joint by microscope

    图  30°界面在光学显微镜下的局部摩擦形态

    Figure  6.  Local sliding morphology of 30° joint by microscope

    图  15°界面在台阶仪下的局部表面形态

    Figure  7.  Local surface morphology of 15° joint by stylus profiler

    图  30°界面在台阶仪下的局部表面形态

    Figure  8.  Local surface morphology of 30° joint by stylus profiler

    图  斜条型子群(a)与雁型排列子群(b)[21]

    Figure  9.  Oblique strip pattern (a) and echelon pattern (b)[21]

    图  10  应用斜条型子群拟合30°界面

    Figure  10.  Simulation surface of 30° joint by oblique strip pattern

    图  11  动摩擦过程界面形态演化

    Figure  11.  Simulated evolution of surface morphology during dynamic friction

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  • 收稿日期:  2020-11-18
  • 修回日期:  2020-12-16

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