Fracture of brittle solids under impact: The decisive role of stress waves

被引:16
作者
Jiang, Bin [1 ]
Hu, Jiayi [1 ]
Guo, Yazhou [1 ,2 ]
Li, Jian [1 ]
Ding, Yi [1 ]
Wei, Qiuming [3 ]
Suo, Tao [1 ,2 ]
Li, Yulong [1 ,2 ,4 ]
机构
[1] Northwestern Polytech Univ, Sch Aeronaut, Xian 710072, Peoples R China
[2] Northwestern Polytech Univ, Shaanxi Key Lab Impact Dynam & Engn Applicat, Xian 710072, Peoples R China
[3] Univ North Carolina Charlotte, Dept Mech Engn, Charlotte, NC 28223 USA
[4] Northwestern Polytech Univ, Sch Civil Aviat, Xian 710072, Peoples R China
基金
中国国家自然科学基金;
关键词
Strength; Brittle material; Impact loading; Bidirectional; Hopkinson bar; DYNAMIC MOHR-COULOMB; MECHANICAL-PROPERTIES; SIZE; STRENGTH; FAILURE; GLASS; COMPRESSION; CONCRETE; MODEL; ROCK;
D O I
10.1016/j.ijimpeng.2021.104104
中图分类号
TH [机械、仪表工业];
学科分类号
0802 ;
摘要
Measurement of the impact strength of brittle solids is traditionally conducted by split Hopkinson pressure bar (SHPB), where one stress wave is generated and loads on the specimen (uniaxial-unidirectional, UD). What if this single stress wave is split into two (or more) smaller pulses that load on the same specimen? Based on the classical one dimensional elastic stress wave theory, nothing different would happen. However, our experiments revealed the opposite results. Electromagnetic split Hopkinson pressure bar (ESHPB), a newly developed technique that can launch two stress pulses simultaneously in opposite directions along the coaxial bars (uniaxialbidirectional, BD), was adopted to test the compressive strength of a glass. Results indicated that the loading stress waves largely determined the measured compressive strength, with all other conditions identical. Significant discrepancy (as large as 69.1%) was observed between UD and BD strength. Possible reason for this discrepancy was proposed by high-speed photography.
引用
收藏
页数:8
相关论文
共 40 条
[1]  
[Anonymous], 1994, Dynamic Behavior of Materials, P66
[2]   Fracture and fragmentation of dolomite rock using the JH-2 constitutive model: Parameter determination, experiments and simulations [J].
Baranowski, Pawel ;
Kucewicz, Michal ;
Gieleta, Roman ;
Stankiewicz, Michal ;
Konarzewski, Marcin ;
Bogusz, Pawel ;
Pytlik, Mateusz ;
Malachowski, Jerzy .
INTERNATIONAL JOURNAL OF IMPACT ENGINEERING, 2020, 140
[3]  
BAZANT ZP, 1984, J ENG MECH-ASCE, V110, P518
[4]   SIZE EFFECTS ON TENSILE FRACTURE PROPERTIES - A UNIFIED EXPLANATION-BASED ON DISORDER AND FRACTALITY OF CONCRETE MICROSTRUCTURE [J].
CARPINTERI, A ;
FERRO, G .
MATERIALS AND STRUCTURES, 1994, 27 (174) :563-571
[5]  
Chen WNW, 2011, MECH ENG SER, P1, DOI 10.1007/978-1-4419-7982-7
[6]   Some Fundamental Issues in Dynamic Compression and Tension Tests of Rocks Using Split Hopkinson Pressure Bar [J].
Dai, Feng ;
Huang, Sheng ;
Xia, Kaiwen ;
Tan, Zhuoying .
ROCK MECHANICS AND ROCK ENGINEERING, 2010, 43 (06) :657-666
[7]   Extreme creep resistance in a microstructurally stable nanocrystalline alloy [J].
Darling, K. A. ;
Rajagopalan, M. ;
Komarasamy, M. ;
Bhatia, M. A. ;
Hornbuckle, B. C. ;
Mishra, R. S. ;
Solanki, K. N. .
NATURE, 2016, 537 (7620) :378-+
[8]   Dynamic response of glass under low-velocity impact and high strain-rate SHPB compression loading [J].
Daryadel, Seyed Soheil ;
Mantena, P. Raju ;
Kim, Kiyun ;
Stoddard, Damian ;
Rajendran, A. M. .
JOURNAL OF NON-CRYSTALLINE SOLIDS, 2016, 432 :432-439
[9]   Electromagnetic Hopkinson bar: A powerful scientific instrument to study mechanical behavior of materials at high strain rates [J].
Guo, Yazhou ;
Du, Bing ;
Liu, Huifang ;
Ding, Zhupan ;
Zhao, Zhenqiang ;
Tang, Zhongbin ;
Suo, Tao ;
Li, Yulong .
REVIEW OF SCIENTIFIC INSTRUMENTS, 2020, 91 (08)