Mesoscopic numerical simulation method of the shock compression properties of rock materials

WU Yang; ZHANG Xian-feng; XIONG Wei; PAN Jian; QIAO Liang; GUO Lei

doi:10.16285/j.rsm.2017.06.031

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Mesoscopic numerical simulation method of the shock compression properties of rock materials

更新时间：2026-06-25

- Mesoscopic numerical simulation method of the shock compression properties of rock materials
- Vol. 38, Issue 6, Pages: 1805-1812(2017)
- 作者机构：
  
  1. 南京理工大学机械工程学院
  2. 瞬态冲击技术重点实验室
  3. 北京航天长征飞行器研究所
- 作者简介：
- 基金信息：
- DOI：10.16285/j.rsm.2017.06.031
  CLC： TU45
- Published：2017
- 稿件说明：
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[1]伍杨,张先锋,熊玮,潘建,乔良,郭磊.岩石材料冲击压缩特性细观模拟方法研究[J].岩土力学,2017,38(06):1805-1812.

WU Yang, ZHANG Xian-feng, XIONG Wei, et al. Mesoscopic numerical simulation method of the shock compression properties of rock materials[J]. 2017, 38(6): 1805-1812.
[1]伍杨,张先锋,熊玮,潘建,乔良,郭磊.岩石材料冲击压缩特性细观模拟方法研究[J].岩土力学,2017,38(06):1805-1812. DOI： 10.16285/j.rsm.2017.06.031.

WU Yang, ZHANG Xian-feng, XIONG Wei, et al. Mesoscopic numerical simulation method of the shock compression properties of rock materials[J]. 2017, 38(6): 1805-1812. DOI： 10.16285/j.rsm.2017.06.031.

摘要

岩石材料的细观特性对宏观力学性能有着重要影响。为了分析岩石材料颗粒形态、孔隙和含水等细观特性对宏观冲击响应行为的影响规律

从岩石材料的细观特性入手

结合材料细观结构照片

经制图软件矢量化和轮廓处理

建立了能够反映材料细观分布特性的岩石材料有限元模型。基于AUTODYN有限元计算软件

对岩石材料冲击压缩细观行为进行数值模拟

获取材料颗粒形态、孔隙和含水等细观特性对材料宏观冲击压缩特性的影响规律。确定岩石材料冲击Hugoniot参数

应用于冲击开坑仿真中

并与已有的试验结果进行了对比。结果表明:数值仿真结果与已有试验数据吻合较好;孔隙率和含水率对岩石材料冲击波衰减规律有十分显著的影响;细观模拟确定的Hugoniot参数运用到岩石材料宏观动力学行为数值模拟中

可有效反映岩石材料中颗粒、孔隙和含水等细观特性对冲击开坑行为的影响规律。

Abstract

It is known that mesoscopic characteristics of rock materials have a significant effect on its macroscopic mechanical properties.Based on the electron micrograph of mesostructure of typical rock materials

a mesoscopic simulation model was established to investigate the shock compression behavior of rock materials with different mesostructures

such as particle morphology

porosity and water.Numerical studies of mesoscopic behaviors were conducted on rock materials during the compressive processes using ANSYS Autodyn software.We obtained the effect of particle morphology

porosity and water on shock compressive properties at mesoscale.The Hugoniot parameters of rock materials with different mesostructures were determined

which were further applied in the impact cratering process simulations.The results show that both the Hugoniot parameters at mesoscale and the results of cratering process simulation are in good agreement with existing experimental counterparts in the literature.It is found that the porosity and water content have an obvious negative effect on the shock wave propagation in rock materials.The Hugoniot parameters determined by the mesoscopic simulation are applied to predict dynamic responses of rock materials

which can effectively reflect the effect of particle morphology

porosity and water content on impact cratering.

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