Dynamic response properties of polymer bonded explosives under different excitation by deceleration
Based on the experimental method of projectile penetration into the concrete target, different excitation by deceleration of polymer bonded explosives (PBXs) was achieved by controlling the length of steel pillars behind PBXs. A series of impact tests were conducted to study the mechanical response...
| Main Authors: | , , , , , , , |
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| Format: | Article |
| Language: | English |
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Elsevier
2021-08-01
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| Series: | Materials & Design |
| Subjects: | |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S0264127521003634 |
| _version_ | 1818891993859751936 |
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| author | Wenzheng Xu Fengwei Guo Xin Liang Tianlun Yan Yang Xu Jie Deng Yuexin Li Jingyu Wang |
| author_facet | Wenzheng Xu Fengwei Guo Xin Liang Tianlun Yan Yang Xu Jie Deng Yuexin Li Jingyu Wang |
| author_sort | Wenzheng Xu |
| collection | DOAJ |
| description | Based on the experimental method of projectile penetration into the concrete target, different excitation by deceleration of polymer bonded explosives (PBXs) was achieved by controlling the length of steel pillars behind PBXs. A series of impact tests were conducted to study the mechanical response of PBXs with different initial densities under different excitation by deceleration. A physical model was developed to describe the viscoelastic-plastic deformation of PBXs. The plastic part was added on the basis of the viscoelastic statistical crack mechanical model (Visco-SCRAM) model, and the compaction behavior of charge in different environments was characterized based on the Heckel compaction equation. The model was implemented in LS-DYNA, and the simulation results were verified by the experiments. The dynamic mechanical behavior of PBXs under different excitation by deceleration was studied from the macroscopic and mesoscale aspects. The stress curves, strain curves, the density change and the interaction between particles in deceleration environment were predicted. After comparison and analysis, the dynamic response law of the charge in the penetrating process was obtained. Macroscopic responses along with mesoscale modeling results are significantly important to have a better understanding of deformation mechanisms of PBXs. |
| first_indexed | 2024-12-19T17:49:38Z |
| format | Article |
| id | doaj.art-2625639b30b441fe95b1a20e8524eb28 |
| institution | Directory Open Access Journal |
| issn | 0264-1275 |
| language | English |
| last_indexed | 2024-12-19T17:49:38Z |
| publishDate | 2021-08-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Materials & Design |
| spelling | doaj.art-2625639b30b441fe95b1a20e8524eb282022-12-21T20:11:57ZengElsevierMaterials & Design0264-12752021-08-01206109810Dynamic response properties of polymer bonded explosives under different excitation by decelerationWenzheng Xu0Fengwei Guo1Xin Liang2Tianlun Yan3Yang Xu4Jie Deng5Yuexin Li6Jingyu Wang7School of Environment and Safety Engineering, North University of China, Taiyuan 030051, Shanxi, China; Corresponding author.School of Environment and Safety Engineering, North University of China, Taiyuan 030051, Shanxi, ChinaAviation Maintenance NCO Academy, Air Force Engineering University, ChinaSchool of Environment and Safety Engineering, North University of China, Taiyuan 030051, Shanxi, ChinaThe 705th Research Institute, China Shipbuilding Industry Corporation, ChinaSchool of Environment and Safety Engineering, North University of China, Taiyuan 030051, Shanxi, ChinaSchool of Environment and Safety Engineering, North University of China, Taiyuan 030051, Shanxi, ChinaSchool of Environment and Safety Engineering, North University of China, Taiyuan 030051, Shanxi, ChinaBased on the experimental method of projectile penetration into the concrete target, different excitation by deceleration of polymer bonded explosives (PBXs) was achieved by controlling the length of steel pillars behind PBXs. A series of impact tests were conducted to study the mechanical response of PBXs with different initial densities under different excitation by deceleration. A physical model was developed to describe the viscoelastic-plastic deformation of PBXs. The plastic part was added on the basis of the viscoelastic statistical crack mechanical model (Visco-SCRAM) model, and the compaction behavior of charge in different environments was characterized based on the Heckel compaction equation. The model was implemented in LS-DYNA, and the simulation results were verified by the experiments. The dynamic mechanical behavior of PBXs under different excitation by deceleration was studied from the macroscopic and mesoscale aspects. The stress curves, strain curves, the density change and the interaction between particles in deceleration environment were predicted. After comparison and analysis, the dynamic response law of the charge in the penetrating process was obtained. Macroscopic responses along with mesoscale modeling results are significantly important to have a better understanding of deformation mechanisms of PBXs.http://www.sciencedirect.com/science/article/pii/S0264127521003634DecelerationDensity changeImpact testConstitutive modelMechanical response |
| spellingShingle | Wenzheng Xu Fengwei Guo Xin Liang Tianlun Yan Yang Xu Jie Deng Yuexin Li Jingyu Wang Dynamic response properties of polymer bonded explosives under different excitation by deceleration Materials & Design Deceleration Density change Impact test Constitutive model Mechanical response |
| title | Dynamic response properties of polymer bonded explosives under different excitation by deceleration |
| title_full | Dynamic response properties of polymer bonded explosives under different excitation by deceleration |
| title_fullStr | Dynamic response properties of polymer bonded explosives under different excitation by deceleration |
| title_full_unstemmed | Dynamic response properties of polymer bonded explosives under different excitation by deceleration |
| title_short | Dynamic response properties of polymer bonded explosives under different excitation by deceleration |
| title_sort | dynamic response properties of polymer bonded explosives under different excitation by deceleration |
| topic | Deceleration Density change Impact test Constitutive model Mechanical response |
| url | http://www.sciencedirect.com/science/article/pii/S0264127521003634 |
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