Dynamics Analysis of Penetration against Pebble-Concrete Target
The classical continuum mechanics theory cannot sufficiently describe the effect of pebbles on projectile, which leads to a large calculation error. In this paper, an orthogonal curvilinear coordinate system is constructed, which effectively describes and perfects the normal cavity expansion theory....
| Main Authors: | , , , , , |
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| Format: | Article |
| Language: | English |
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MDPI AG
2022-02-01
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| Series: | Materials |
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| Online Access: | https://www.mdpi.com/1996-1944/15/5/1675 |
| _version_ | 1797474616520736768 |
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| author | Huan Yan Lei Jin Shiqiao Gao Xiao Xu Zezhang Li He Fu |
| author_facet | Huan Yan Lei Jin Shiqiao Gao Xiao Xu Zezhang Li He Fu |
| author_sort | Huan Yan |
| collection | DOAJ |
| description | The classical continuum mechanics theory cannot sufficiently describe the effect of pebbles on projectile, which leads to a large calculation error. In this paper, an orthogonal curvilinear coordinate system is constructed, which effectively describes and perfects the normal cavity expansion theory. A couple stress theory based on the normal cavity expansion is proposed in which not only the tangential movements but also the rotations of the concrete medium are considered. According to the high-speed impact of pebble concrete, combined with dynamic equations and the FE simulation, the theoretical and simulation results of pebble particles scale on warhead resistance are compared. It is shown that, the larger the scale of pebble particles, the stronger the effect of rotation on the resistant force applied on the warhead. |
| first_indexed | 2024-03-09T20:32:39Z |
| format | Article |
| id | doaj.art-04fe4dbace374307aeb5656650023a25 |
| institution | Directory Open Access Journal |
| issn | 1996-1944 |
| language | English |
| last_indexed | 2024-03-09T20:32:39Z |
| publishDate | 2022-02-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Materials |
| spelling | doaj.art-04fe4dbace374307aeb5656650023a252023-11-23T23:17:03ZengMDPI AGMaterials1996-19442022-02-01155167510.3390/ma15051675Dynamics Analysis of Penetration against Pebble-Concrete TargetHuan Yan0Lei Jin1Shiqiao Gao2Xiao Xu3Zezhang Li4He Fu5State Key Laboratory of Explosion Science and Technology, Beijing Institute of Technology, Beijing 100081, ChinaState Key Laboratory of Explosion Science and Technology, Beijing Institute of Technology, Beijing 100081, ChinaState Key Laboratory of Explosion Science and Technology, Beijing Institute of Technology, Beijing 100081, ChinaState Key Laboratory of Explosion Science and Technology, Beijing Institute of Technology, Beijing 100081, ChinaBeijing Institute of Automatic Control Equipment, Beijing 100074, ChinaState Key Laboratory of Explosion Science and Technology, Beijing Institute of Technology, Beijing 100081, ChinaThe classical continuum mechanics theory cannot sufficiently describe the effect of pebbles on projectile, which leads to a large calculation error. In this paper, an orthogonal curvilinear coordinate system is constructed, which effectively describes and perfects the normal cavity expansion theory. A couple stress theory based on the normal cavity expansion is proposed in which not only the tangential movements but also the rotations of the concrete medium are considered. According to the high-speed impact of pebble concrete, combined with dynamic equations and the FE simulation, the theoretical and simulation results of pebble particles scale on warhead resistance are compared. It is shown that, the larger the scale of pebble particles, the stronger the effect of rotation on the resistant force applied on the warhead.https://www.mdpi.com/1996-1944/15/5/1675couple stress theorypebble-concrete targetnormal cavity expansionpenetrationhigh-speed impact |
| spellingShingle | Huan Yan Lei Jin Shiqiao Gao Xiao Xu Zezhang Li He Fu Dynamics Analysis of Penetration against Pebble-Concrete Target Materials couple stress theory pebble-concrete target normal cavity expansion penetration high-speed impact |
| title | Dynamics Analysis of Penetration against Pebble-Concrete Target |
| title_full | Dynamics Analysis of Penetration against Pebble-Concrete Target |
| title_fullStr | Dynamics Analysis of Penetration against Pebble-Concrete Target |
| title_full_unstemmed | Dynamics Analysis of Penetration against Pebble-Concrete Target |
| title_short | Dynamics Analysis of Penetration against Pebble-Concrete Target |
| title_sort | dynamics analysis of penetration against pebble concrete target |
| topic | couple stress theory pebble-concrete target normal cavity expansion penetration high-speed impact |
| url | https://www.mdpi.com/1996-1944/15/5/1675 |
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