Simulation of dynamic response of projectile and granular target
In the present study, the three-dimensional elastic discrete element method (DEM) and the elastic finite element method (FEM) analysis were, respectively, applied to the randomly distributed identical spheres as a granular target and to the cylindrical projectiles in order to clarify dynamic respons...
| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
| Published: |
EDP Sciences
2015-01-01
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| Series: | EPJ Web of Conferences |
| Online Access: | http://dx.doi.org/10.1051/epjconf/20159404040 |
| _version_ | 1818655741027811328 |
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| author | Ogawa Kinya Takeda Shin-nosuke Kobayashi Hidetoshi Tanigaki Kenichi |
| author_facet | Ogawa Kinya Takeda Shin-nosuke Kobayashi Hidetoshi Tanigaki Kenichi |
| author_sort | Ogawa Kinya |
| collection | DOAJ |
| description | In the present study, the three-dimensional elastic discrete element method (DEM) and the elastic finite element method (FEM) analysis were, respectively, applied to the randomly distributed identical spheres as a granular target and to the cylindrical projectiles in order to clarify dynamic response during penetration. In the target, it was found that highly densified region was formed just ahead of the projectile and began to propagate spherically at much higher velocity than that of projectile leaving relatively rarefied region. It was also found that the peak resistance during penetration was closely related to the initial formation of densified region and was expressed in terms of momentum change of target particles accelerated by the projectile. Stress wave propagation in the projectiles with various body lengths was investigated during penetration and was discussed in connection with dynamic response of target particles ahead of the projectile. Effect of mechanical properties of projectile on the peak resistance was also investigated and was understood in connection with dynamic behavior of target particles. |
| first_indexed | 2024-12-17T03:14:30Z |
| format | Article |
| id | doaj.art-9917fb1958074c219078eece84ad194d |
| institution | Directory Open Access Journal |
| issn | 2100-014X |
| language | English |
| last_indexed | 2024-12-17T03:14:30Z |
| publishDate | 2015-01-01 |
| publisher | EDP Sciences |
| record_format | Article |
| series | EPJ Web of Conferences |
| spelling | doaj.art-9917fb1958074c219078eece84ad194d2022-12-21T22:05:44ZengEDP SciencesEPJ Web of Conferences2100-014X2015-01-01940404010.1051/epjconf/20159404040epjconf-dymat2015_04040Simulation of dynamic response of projectile and granular targetOgawa Kinya0Takeda Shin-nosuke1Kobayashi Hidetoshi2Tanigaki Kenichi3Institute of Space DynamicsSchool of Engineering Science, Osaka University 1-3 Machikaneyama-choSchool of Engineering Science, Osaka University 1-3 Machikaneyama-choSchool of Engineering Science, Osaka University 1-3 Machikaneyama-choIn the present study, the three-dimensional elastic discrete element method (DEM) and the elastic finite element method (FEM) analysis were, respectively, applied to the randomly distributed identical spheres as a granular target and to the cylindrical projectiles in order to clarify dynamic response during penetration. In the target, it was found that highly densified region was formed just ahead of the projectile and began to propagate spherically at much higher velocity than that of projectile leaving relatively rarefied region. It was also found that the peak resistance during penetration was closely related to the initial formation of densified region and was expressed in terms of momentum change of target particles accelerated by the projectile. Stress wave propagation in the projectiles with various body lengths was investigated during penetration and was discussed in connection with dynamic response of target particles ahead of the projectile. Effect of mechanical properties of projectile on the peak resistance was also investigated and was understood in connection with dynamic behavior of target particles.http://dx.doi.org/10.1051/epjconf/20159404040 |
| spellingShingle | Ogawa Kinya Takeda Shin-nosuke Kobayashi Hidetoshi Tanigaki Kenichi Simulation of dynamic response of projectile and granular target EPJ Web of Conferences |
| title | Simulation of dynamic response of projectile and granular target |
| title_full | Simulation of dynamic response of projectile and granular target |
| title_fullStr | Simulation of dynamic response of projectile and granular target |
| title_full_unstemmed | Simulation of dynamic response of projectile and granular target |
| title_short | Simulation of dynamic response of projectile and granular target |
| title_sort | simulation of dynamic response of projectile and granular target |
| url | http://dx.doi.org/10.1051/epjconf/20159404040 |
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