Effect of stress-state adjustment on fragmentation behavior of quartz glass beads subjected to low-velocity impact

SONG Yiping; MIAO Chunhe; SHAN Junfang; WANG Pengfei; XU Songlin

doi:10.11883/bzycj-2021-0244

Volume 42 Issue 7

Jul. 2022

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SONG Yiping, MIAO Chunhe, SHAN Junfang, WANG Pengfei, XU Songlin. Effect of stress-state adjustment on fragmentation behavior of quartz glass beads subjected to low-velocity impact[J]. Explosion And Shock Waves, 2022, 42(7): 073103. doi: 10.11883/bzycj-2021-0244

Citation:

SONG Yiping, MIAO Chunhe, SHAN Junfang, WANG Pengfei, XU Songlin. Effect of stress-state adjustment on fragmentation behavior of quartz glass beads subjected to low-velocity impact[J]. Explosion And Shock Waves, 2022, 42(7): 073103. doi: 10.11883/bzycj-2021-0244

Citation:

SONG Yiping, MIAO Chunhe, SHAN Junfang, WANG Pengfei, XU Songlin. Effect of stress-state adjustment on fragmentation behavior of quartz glass beads subjected to low-velocity impact[J]. Explosion And Shock Waves, 2022, 42(7): 073103. doi: 10.11883/bzycj-2021-0244

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Effect of stress-state adjustment on fragmentation behavior of quartz glass beads subjected to low-velocity impact

doi: 10.11883/bzycj-2021-0244

1.
CAS Key Laboratory for Mechanical Behavior and Design of Materials, University of Science and Technology of China, Hefei 230027, Anhui, China
2.
United Laboratory of High Pressure Physics and Earthquake Science, Institute of Earthquake Forecasting, China Earthquake Administration, Beijing 100036, China

Received Date: 2021-06-22
Accepted Date: 2022-06-01
Rev Recd Date: 2021-08-20

Available Online: 2022-06-07

Publish Date: 2022-07-25

Abstract

Abstract

By using a SHPB device combined with high-speed photography technology, low-velocity impact experiments of quartz glass beads with diameters of 7.90, 11.80 and 15.61 mm were carried out by means of respectively three kinds of transmission bars, i.e., steel bar, aluminum bar, and polymethyl methacrylate (PMMA) bar. According to the load-displacement curves in the breakage process of glass beads under different transmission bar conditions, combined with the load adjustment of glass beads under impact and the strain of glass beads during the experiment, the influence of stress adjustment on the breakage process of glass beads subjected to low-velocity impact is explored. The results show that under the same impact conditions, the adjustment of the material of the transmission bar will alter the load distribution in the glass bead during impact breakage, that is, the change of the wave impedance at the transmission end will change the reflected wave, which leads to the load adjustment in the process of multiple reflection loading. When the transmission bar is made of aluminum and PMMA, the load in the glass bead decreases obviously during the crushing process, and the stress adjustment duration of the glass bead becomes longer with more deformation of the cushion block during the loading process. When the transmission bar is made of steel, the strain in the glass bead is the largest at both ends, while the closer to the middle of the bead, the smaller the strain. For the glass beads loaded with aluminum and/or PMMA transmission bar, local unloading behavior is found at the transmission end of bead. By employing the PMMA transmission bar, the local stress and deformation both decrease, resulting in the glass bead being broken with larger deformation. It is further shown that glass bead breakage is controlled by local deformation and local deformation gradient.
- impact dynamics,
- quartz glass bead,
- critical breakage,
- stress-state adjustment

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References(22)

References

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