Study on Passive Confined Pressure SHPB Simulation of Concrete Material under Quasi-One Dimensional Strain

高富强; 侯爱军; 杨军; 杨小林; 张光雄

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Study on Passive Confined Pressure SHPB Simulation of Concrete Material under Quasi-One Dimensional Strain

更新时间：2026-09-14

- Study on Passive Confined Pressure SHPB Simulation of Concrete Material under Quasi-One Dimensional Strain
- 混凝土在准一维应变下被动围压SHPB的模拟研究
- Vol. 32, Issue 2, Pages: 239-244(2011)
- 作者机构：
  
  1. 洛阳理工学院土木工程系
  2. 北京理工大学爆炸科学与技术国家重点实验室
- 作者简介：
- 基金信息：
- DOI：
  CLC：
- Published：2011
- 稿件说明：
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高富强, 侯爱军, 杨军, et al. Study on Passive Confined Pressure SHPB Simulation of Concrete Material under Quasi-One Dimensional Strain[J]. 2011, 32(2): 239-244.
DOI：

高富强, 侯爱军, 杨军, et al. Study on Passive Confined Pressure SHPB Simulation of Concrete Material under Quasi-One Dimensional Strain[J]. 2011, 32(2): 239-244. DOI：

摘要

采用量纲分析和有限元计算的方法

研究了混凝土材料在被动围压分离式霍普金森压杆(Split Hopkinson Pressure Bar

SHPB)试验中出现的应力增强效应

定义了能够描述应力增强效应的应力增强系数.通过LS-DYNA有限元计算程序分析了不同材料及尺寸的围压套筒对应力峰值的影响

结果表明:应力峰值随套筒与试件弹性模量比、厚度半径比的增大而增大

随间隙半径比的增大而减小.最后通过改变试件与压杆、试件与套筒之间摩擦系数的方法

研究了摩擦效应对应力峰值的影响.研究结果对被动围压SHPB试验有一定的指导意义.

Abstract

The stress enhancement effect observed in passive confined pressure Split Hopkinson Pressure Bar(SHPB) experiments for concrete materials was studied by dimensional analysis and finite element method.The concept of stress enhancement coefficient was introduced.The effect of confining sleeve with different materials and dimensions on stress peak was analyzed by LS-DYNA

a kind of FEM software.The results showed that the stress peak increased with the increment of elastic modulus ratio and thickness radius ratio between sleeve and specimen

and it decreased with the increment of clearance radius ratio between sleeve and specimen.The friction's effect on the stress peak was studied by adopting different frictional coefficients between specimen and sleeve or pressure bar.The conclusion is of some significance on guiding passive confined pressure SHPB experiment.

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references

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