 | | Mechanics of Solids
A Journal of Russian Academy of Sciences | | Founded
in January 1966
Issued 6 times a year
Print ISSN 0025-6544
Online ISSN 1934-7936 |
Archive of Issues
| Total articles in the database: | | 13427 |
| In Russian (Èçâ. ÐÀÍ. ÌÒÒ): | | 8178
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| In English (Mech. Solids): | | 5249 |
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| Lv Wenzheng, Dong Keqiang, Wang Peng, Tian Haoyu, Du Chengxin, and Du Zhonghua, "Study on the Influence of Elongation Ratio on Penetration Depth of Extended Long-Rod Projectiles," Mech. Solids. 60 (6), 5326-5342 (2025) |
| Year |
2025 |
Volume |
60 |
Number |
6 |
Pages |
5326-5342 |
| DOI |
10.1134/S0025654425604331 |
| Title |
Study on the Influence of Elongation Ratio on Penetration Depth of Extended Long-Rod Projectiles |
| Author(s) |
Lv Wenzheng (Nanjing University of Science and Technology, Nanjing, 210094 China)
Dong Keqiang (Nanjing University of Science and Technology, Nanjing, 210094 China)
Wang Peng (Nanjing University of Science and Technology, Nanjing, 210094 China)
Tian Haoyu (Shenyang Ligong University, Shenyang, 110158 China)
Du Chengxin (Nanjing University of Science and Technology, Nanjing, 210094 China, duchengxin@njust.edu.cn)
Du Zhonghua (Nanjing University of Science and Technology, Nanjing, 210094 China; Shenyang Ligong University, Shenyang, 110158 China, duzhonghua@aliyun.com) |
| Abstract |
To study the effect of elongation ratio μ on the penetration depth of extendable long-rod projectiles (ELRPs), an ELRP was designed based on a conventional homogeneous long-rod projectile. First, finite element software LS-DYNA was employed to simulate the vertical penetration of both projectiles into armor steel targets, with simulation parameters and algorithms validated via experiments; subsequently, systematic numerical simulations analyzed the penetration performance of ELRPs (elongation ratio μ: 5.88–35.00%) under typical artillery velocities (1160–1600 m·s−1) and clarified the mechanisms of penetration depth gain. Results show that under the same conditions, ELRPs outperform homogeneous rods in penetration capability, attributed to two factors: (1) the ELRP’s segmented rod-like penetration mode yields higher efficiency and cumulative damage; (2) the slender leading section of the rear core sharpens the head shape, reducing penetration resistance on the rear core’s main segment to improve performance. However, as the elongation ratio μ increases, the “target core effect” becomes more prominent, weakening the rear core’s penetration. Within the studied range, an optimal elongation ratio μ exists—at 29.00%, the maximum penetration depth gain reaches 18.00%—driven by the competition between the rear core’s penetration enhancement and the target core’s weakening effect. |
| Keywords |
extendable long-rod projectile (ELRP), vertical penetration, elongation ratio, penetration efficiency, penetration gain |
| Received |
11 August 2025 | Revised |
25 September 2025 | Accepted |
02 October 2025 |
| Link to Fulltext |
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