| 引用本文: | 刘洋佐,马大为,任杰,等.双箭头负泊松比结构抗侵彻性能.[J].国防科技大学学报,2023,45(2):197-207.[点击复制] |
| LIU Yangzuo,MA Dawei,REN Jie,et al.Ballistic performance of double-arrow negative Poisson′s ratio structure[J].Journal of National University of Defense Technology,2023,45(2):197-207[点击复制] |
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| 双箭头负泊松比结构抗侵彻性能 |
| 刘洋佐,马大为,任杰,仲健林,赵昌方 |
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(南京理工大学 机械工程学院, 江苏 南京 210094)
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| 摘要: |
| 采用数值模拟方法研究了双箭头负泊松比多胞结构抗子弹侵彻性能,对比分析了顶边撞击、铰点撞击、侧边撞击三种弹靶作用条件下子弹的侵彻行为与双箭头负泊松比结构的破坏形式。研究结果表明:当子弹以较高速度撞击双箭头负泊松比结构时,该结构的负泊松比效应不显著；顶边撞击与铰点撞击时,子弹直接贯穿结构,胞元破坏较小,此时双箭头负泊松比多胞结构抗侵彻性能较差；侧边撞击时,子弹未贯穿多胞结构,胞元破坏较大,双箭头负泊松比结构依靠其双三角结构使子弹发生偏转,显著增大了其侵彻阻力。分析了顶边撞击时子弹的入射角度变化对于双箭头负泊松比结构抗侵彻性能的影响,发现存在30°入射角和60°入射角。当子弹处于这两种入射角附近时,双箭头负泊松比多胞结构具有一定的抗侵彻能力。 |
| 关键词: 多胞材料 负泊松比 结构响应 局部侵彻 |
| DOI：10.11887/j.cn.202302023 |
| 投稿日期：2021-05-27 |
| 基金项目:国家自然科学基金资助项目(12002169)；江苏省博士后基金资助项目(2020Z226)；江苏省研究生科研与实践创新计划资助项目(SJCX20_0106) |
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| Ballistic performance of double-arrow negative Poisson′s ratio structure |
| LIU Yangzuo, MA Dawei, REN Jie, ZHONG Jianlin, ZHAO Changfang |
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(School of Mechanical Engineering, Nanjing University of Science and Technology, Nanjing 210094, China)
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| Abstract: |
| The penetration performance of the double-arrow negative Poisson′s ratio multicellular structure against bullet penetration was studied by numerical simulation method.The penetration behaviors of bullets and the damage forms of the double-arrow negative Poisson′s ratio structure under the three bullet target conditions of top-edge impact,hinge-point impact and side-impact were compared and analyzed.The results show that the negative Poisson′s ratio effect of the double-arrow negative Poisson′s ratio structure is not significant when the bullet impacts the structure at a high velocity.The bullet directly penetrates the structure at topside impact and hinge point impact,the damage of the cell element is small and the anti-intrusion performance of the double-arrow negative Poisson′s ratio multi-cell structure is poor at this time.The bullet does not penetrate the multi-cell structure at side impact,and the damage of the cell element is large;the double-arrow negative Poisson′s ratio structure relies on its double-Poisson′s ratio structure to deflect the bullet at side impact.The double-arrow negative Poisson′s ratio structure relies on its double triangular structure to deflect and roll the bullet during side impact,which significantly increases its penetration resistance.The effect of the change in the angle of incidence of the bullet during topside impact on the intrusion resistance of the double-arrow negative Poisson′s ratio structure was analyzed. It is found that there is a 30° angle of incidence and a 60° angle of incidence.The double-arrow negative Poisson′s ratio multi-cell structure has some resistance to penetration when the bullet is near these two incidence angles. |
| Keywords: cellular materials negative Poisson′s ratio structural response local penetration |
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