Quasi-Static Finite Cylindrical Cavity Expansion Model for Long-Rod Penetration into Cylindrical Metal Thick Targets with Finite Diameters
A quasi-static finite cavity cylindrical expansion model is proposed to investigate the lateral boundary effect during long-rod penetration. Analytical solutions for the cavity pressure in the elastic–plastic stage and plastic stage are obtained, through which a decay function for the lateral bounda...
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MDPI AG
2024-02-01
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| Series: | Applied Sciences |
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| Online Access: | https://www.mdpi.com/2076-3417/14/4/1523 |
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| author | Yunke Lu Xigui Tao Yicun Chen Bei Zhang Jiageng Song Xiangyu Xu Jianshuai Wang |
| author_facet | Yunke Lu Xigui Tao Yicun Chen Bei Zhang Jiageng Song Xiangyu Xu Jianshuai Wang |
| author_sort | Yunke Lu |
| collection | DOAJ |
| description | A quasi-static finite cavity cylindrical expansion model is proposed to investigate the lateral boundary effect during long-rod penetration. Analytical solutions for the cavity pressure in the elastic–plastic stage and plastic stage are obtained, through which a decay function for the lateral boundary effect is constructed. The resistance of the target with finite diameter <i>R</i><sub>T</sub> is obtained by multiplying the decay function with the resistance of infinite target <i>R</i><sub>T</sub>*. Then, a theoretical model for the penetration into the metal targets with finite diameters by long rods is proposed by substituting <i>R</i><sub>T</sub> into the Alekseevskii–Tate model. The proposed model is verified by comparison with existing experimental results. Furthermore, the effect of the target diameter, initial impact velocity and yield criterion on the penetration depth and resistance are investigated. The results showed that the lateral boundary effect should be taken into account if the ratio of the target radius to the rod radius (<i>r</i><sub>t0</sub>/<i>R</i><sub>P</sub>) is less than 25. |
| first_indexed | 2024-03-07T22:44:02Z |
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| institution | Directory Open Access Journal |
| issn | 2076-3417 |
| language | English |
| last_indexed | 2024-03-07T22:44:02Z |
| publishDate | 2024-02-01 |
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| series | Applied Sciences |
| spelling | doaj.art-de838e915c544cc7919cb202439e97542024-02-23T15:06:17ZengMDPI AGApplied Sciences2076-34172024-02-01144152310.3390/app14041523Quasi-Static Finite Cylindrical Cavity Expansion Model for Long-Rod Penetration into Cylindrical Metal Thick Targets with Finite DiametersYunke Lu0Xigui Tao1Yicun Chen2Bei Zhang3Jiageng Song4Xiangyu Xu5Jianshuai Wang6Institute of Defense Engineering, Academy of Military Sciences (AMS), PLA, Beijing 100850, ChinaInstitute of Defense Engineering, Academy of Military Sciences (AMS), PLA, Beijing 100850, ChinaInstitute of Defense Engineering, Academy of Military Sciences (AMS), PLA, Beijing 100850, ChinaInstitute of Defense Engineering, Academy of Military Sciences (AMS), PLA, Beijing 100850, ChinaInstitute of Defense Engineering, Academy of Military Sciences (AMS), PLA, Beijing 100850, ChinaInstitute of Defense Engineering, Academy of Military Sciences (AMS), PLA, Beijing 100850, ChinaInstitute of Defense Engineering, Academy of Military Sciences (AMS), PLA, Beijing 100850, ChinaA quasi-static finite cavity cylindrical expansion model is proposed to investigate the lateral boundary effect during long-rod penetration. Analytical solutions for the cavity pressure in the elastic–plastic stage and plastic stage are obtained, through which a decay function for the lateral boundary effect is constructed. The resistance of the target with finite diameter <i>R</i><sub>T</sub> is obtained by multiplying the decay function with the resistance of infinite target <i>R</i><sub>T</sub>*. Then, a theoretical model for the penetration into the metal targets with finite diameters by long rods is proposed by substituting <i>R</i><sub>T</sub> into the Alekseevskii–Tate model. The proposed model is verified by comparison with existing experimental results. Furthermore, the effect of the target diameter, initial impact velocity and yield criterion on the penetration depth and resistance are investigated. The results showed that the lateral boundary effect should be taken into account if the ratio of the target radius to the rod radius (<i>r</i><sub>t0</sub>/<i>R</i><sub>P</sub>) is less than 25.https://www.mdpi.com/2076-3417/14/4/1523impact dynamicslong-rod penetrationquasi-static finite cylindrical cavity expansion modellateral boundary effecttarget resistancemetal target |
| spellingShingle | Yunke Lu Xigui Tao Yicun Chen Bei Zhang Jiageng Song Xiangyu Xu Jianshuai Wang Quasi-Static Finite Cylindrical Cavity Expansion Model for Long-Rod Penetration into Cylindrical Metal Thick Targets with Finite Diameters Applied Sciences impact dynamics long-rod penetration quasi-static finite cylindrical cavity expansion model lateral boundary effect target resistance metal target |
| title | Quasi-Static Finite Cylindrical Cavity Expansion Model for Long-Rod Penetration into Cylindrical Metal Thick Targets with Finite Diameters |
| title_full | Quasi-Static Finite Cylindrical Cavity Expansion Model for Long-Rod Penetration into Cylindrical Metal Thick Targets with Finite Diameters |
| title_fullStr | Quasi-Static Finite Cylindrical Cavity Expansion Model for Long-Rod Penetration into Cylindrical Metal Thick Targets with Finite Diameters |
| title_full_unstemmed | Quasi-Static Finite Cylindrical Cavity Expansion Model for Long-Rod Penetration into Cylindrical Metal Thick Targets with Finite Diameters |
| title_short | Quasi-Static Finite Cylindrical Cavity Expansion Model for Long-Rod Penetration into Cylindrical Metal Thick Targets with Finite Diameters |
| title_sort | quasi static finite cylindrical cavity expansion model for long rod penetration into cylindrical metal thick targets with finite diameters |
| topic | impact dynamics long-rod penetration quasi-static finite cylindrical cavity expansion model lateral boundary effect target resistance metal target |
| url | https://www.mdpi.com/2076-3417/14/4/1523 |
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