Numerical Simulation of Multiple Explosively Formed Projectile Warhead Forming Characteristics considering Various Materials
To study the influence of different liner structures and materials (copper, steel, and tungsten) on the forming characteristics of multiple explosively formed projectile (MEFP) with integrated liner and shell designs, three types of liners with different structures were designed. LS-DYNA was used fo...
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| Format: | Article |
| Language: | English |
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Wiley
2021-01-01
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| Series: | Shock and Vibration |
| Online Access: | http://dx.doi.org/10.1155/2021/5589031 |
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| author | Guangsong Ma Guanglin He Yukuan Liu Yulong Zhang |
| author_facet | Guangsong Ma Guanglin He Yukuan Liu Yulong Zhang |
| author_sort | Guangsong Ma |
| collection | DOAJ |
| description | To study the influence of different liner structures and materials (copper, steel, and tungsten) on the forming characteristics of multiple explosively formed projectile (MEFP) with integrated liner and shell designs, three types of liners with different structures were designed. LS-DYNA was used for numerical simulation, and the results show that the thickness change at the center of the liner has no obvious influence on the shape of the explosively formed projectile (EFP). However, the curvature radius of the liner has a significant influence on the shape of the EFP. When the liner material is copper and the curvature radius of the liner is greater than 8 mm, the EFP shape approximates an ellipsoidal or hemispherical shape and the EFP forming speed is between 1900 m/s and 2400 m/s. When the material of the liner is steel or tungsten and the curvature radius of the liner is thicker than 8 mm, the liner is not able to form projectiles in the shape of a sphere, ellipsoid, or long rod. By comparing the forming speed from 1#EFP to 4#EFP, it can be said that MEFP with integrated liner and shell design displays a certain pressurization effect. Research results show that, for small-caliber MEFP warheads, subject to the size of the warhead, when the liner is steel or tungsten, the detonation energy generated by the limited charge does not result in the liner forming an effective EFP. However, when the liner material is selected as copper, the EFP forming shape and speed are more appropriate. |
| format | Article |
| id | doaj-art-020461d279094af7b18e2ef60a10588f |
| institution | OA Journals |
| issn | 1070-9622 1875-9203 |
| language | English |
| publishDate | 2021-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | Shock and Vibration |
| spelling | doaj-art-020461d279094af7b18e2ef60a10588f2025-08-20T02:01:46ZengWileyShock and Vibration1070-96221875-92032021-01-01202110.1155/2021/55890315589031Numerical Simulation of Multiple Explosively Formed Projectile Warhead Forming Characteristics considering Various MaterialsGuangsong Ma0Guanglin He1Yukuan Liu2Yulong Zhang3Science and Technology on Electromechanical Dynamic Control Laboratory, Beijing Institute of Technology, Beijing 10081, ChinaScience and Technology on Electromechanical Dynamic Control Laboratory, Beijing Institute of Technology, Beijing 10081, ChinaScience and Technology on Electromechanical Dynamic Control Laboratory, Beijing Institute of Technology, Beijing 10081, ChinaScience and Technology on Electromechanical Dynamic Control Laboratory, Beijing Institute of Technology, Beijing 10081, ChinaTo study the influence of different liner structures and materials (copper, steel, and tungsten) on the forming characteristics of multiple explosively formed projectile (MEFP) with integrated liner and shell designs, three types of liners with different structures were designed. LS-DYNA was used for numerical simulation, and the results show that the thickness change at the center of the liner has no obvious influence on the shape of the explosively formed projectile (EFP). However, the curvature radius of the liner has a significant influence on the shape of the EFP. When the liner material is copper and the curvature radius of the liner is greater than 8 mm, the EFP shape approximates an ellipsoidal or hemispherical shape and the EFP forming speed is between 1900 m/s and 2400 m/s. When the material of the liner is steel or tungsten and the curvature radius of the liner is thicker than 8 mm, the liner is not able to form projectiles in the shape of a sphere, ellipsoid, or long rod. By comparing the forming speed from 1#EFP to 4#EFP, it can be said that MEFP with integrated liner and shell design displays a certain pressurization effect. Research results show that, for small-caliber MEFP warheads, subject to the size of the warhead, when the liner is steel or tungsten, the detonation energy generated by the limited charge does not result in the liner forming an effective EFP. However, when the liner material is selected as copper, the EFP forming shape and speed are more appropriate.http://dx.doi.org/10.1155/2021/5589031 |
| spellingShingle | Guangsong Ma Guanglin He Yukuan Liu Yulong Zhang Numerical Simulation of Multiple Explosively Formed Projectile Warhead Forming Characteristics considering Various Materials Shock and Vibration |
| title | Numerical Simulation of Multiple Explosively Formed Projectile Warhead Forming Characteristics considering Various Materials |
| title_full | Numerical Simulation of Multiple Explosively Formed Projectile Warhead Forming Characteristics considering Various Materials |
| title_fullStr | Numerical Simulation of Multiple Explosively Formed Projectile Warhead Forming Characteristics considering Various Materials |
| title_full_unstemmed | Numerical Simulation of Multiple Explosively Formed Projectile Warhead Forming Characteristics considering Various Materials |
| title_short | Numerical Simulation of Multiple Explosively Formed Projectile Warhead Forming Characteristics considering Various Materials |
| title_sort | numerical simulation of multiple explosively formed projectile warhead forming characteristics considering various materials |
| url | http://dx.doi.org/10.1155/2021/5589031 |
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