A modified method for estimating the stress state of granular materials in the passive confined pressure SHPB tests

被引：16
作者：
Chen, Haoxiang [1 ]
Zhang, Chunxiao [2 ,3 ]
Wei, Jiuqi [2 ,3 ]
Li, Mingzhe [4 ]
Wang, Yanmi [2 ,3 ]
机构：
[1] Beijing Univ Civil Engn & Architecture, Beijing Int Cooperat Base Municipal Transportat I, Beijing 100044, Peoples R China
[2] PLA, AMS, Inst Def Engn, Luoyang 471023, Peoples R China
[3] Henan Key Lab Special Protect Mat, Luoyang 471023, Peoples R China
[4] Harbin Engn Univ, Coll Aerosp & Civil Engn, Harbin 150001, Peoples R China
来源：
INTERNATIONAL JOURNAL OF IMPACT ENGINEERING | 2022年 / 160卷
关键词：
Granular materials; Passive confined SHPB tests; High strain rates; Theoretical modified method; SAND; BEHAVIOR; DEFORMATION; PENETRATION; IMPACT; SOILS;
D O I：
10.1016/j.ijimpeng.2021.104063
中图分类号：
TH [机械、仪表工业];
学科分类号：
0802 ;
摘要：
The Split Hopkinson Pressure Bar (SHPB) is the common testing method used to investigate the high strain rates behavior of engineering materials. In this paper, a theoretical modified method for the determination of stress state in the passive confinement SHPB tests of granular materials is proposed to overcome the disadvantages in the previous works. To validate the modified method, the dynamical response of calcareous sand with two moisture contents, namely, 25% and 30%, were tested by SHPB at high strain rates around 1000 s-1. The predictions provided by modified method were also compared with the experimental results, indicating that the proposed modified method in this paper is applicable in estimating the stress state in sand specimen.
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页数：7
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