Enhancing energy absorption of star-shaped honeycombs by utilizing negative Poisson's ratio effect under high-velocity impact
文献类型：期刊论文
| 作者 | Ren, JP1,2; Gu ZP(谷周澎)1; Zhao, AG2; Huang CG(黄晨光)1,3; Wu XQ(吴先前)1,3 |
| 刊名 | INTERNATIONAL JOURNAL OF IMPACT ENGINEERING
 |
| 出版日期 | 2025-08-01 |
| 卷号 | 202页码:12 |
| 关键词 | Auxetic honeycomb Stress distribution Dynamic impact behavior Numerical simulation Energy absorption characteristics |
| ISSN号 | 0734-743X |
| DOI | 10.1016/j.ijimpeng.2025.105297 |
| 通讯作者 | Zhao, A. G.(shiang_37@163.com) ; Wu, X. Q.(wuxianqian@imech.ac.cn) |
| 英文摘要 | Star-shaped honeycomb (SSH) with negative Poisson's ratio (NPR) effect shows great promise in impact protective engineering. However, it is still unknown whether the NPR effect of SSH can enhance the impact resistance at high impact velocities, particularly regarding the stress evolution. In this paper, we demonstrate that the SSH with NPR can significantly improve the specific energy absorption (SEA) under low impact velocity compared to that with positive Poisson's ratio due to the global in-plane contraction resulting from NPR. However, with increasing the impact velocity, the NPR effects of SSH decrease quickly and even turns to positive Poisson's ratio due to the appearance of localized deformation. These results show that the SSH cannot fully exhibit the energy absorption capacity through global deformation. We then analyze the influence of wall angle and thickness on the NPR and SEA of SSH. The results show that the NPR effect can be maintained successfully at high impact velocities by decreasing the wall angle, resulting in the significant increase in SEA compared to that with larger wall angle. Although the increase of wall thickness leads to the increase of SEA, it has slight influence on the NPR effects. This paper demonstrates the NPR effects on the dynamic behavior of SSH based on the analysis of stress evolution, and suggests the strategy for designing efficient energy-absorbing auxetic honeycomb structure. |
| 分类号 | 一类 |
| 资助项目 | Young Scientists in Basic Research[YSBR-096] |
| WOS研究方向 | Engineering ; Mechanics |
| 语种 | 英语 |
| WOS记录号 | WOS:001444361000001 |
| 资助机构 | Young Scientists in Basic Research |
| 其他责任者 | Zhao, AG，吴先前 |
| 源URL | [http://dspace.imech.ac.cn/handle/311007/100667]  |
| 专题 | 力学研究所_流固耦合系统力学重点实验室(2012-) |
| 作者单位 | 1.Chinese Acad Sci, Inst Mech, Key Lab Mech Fluid Solid Coupling Syst, Beijing 100190, Peoples R China; 2.Nanjing Tech Univ, Coll Civil Engn, Nanjing 211816, Peoples R China; 3.Univ Chinese Acad Sci, Sch Engn Sci, Beijing 100049, Peoples R China |
| 推荐引用方式 GB/T 7714 | Ren, JP,Gu ZP,Zhao, AG,et al. Enhancing energy absorption of star-shaped honeycombs by utilizing negative Poisson's ratio effect under high-velocity impact[J]. INTERNATIONAL JOURNAL OF IMPACT ENGINEERING,2025,202:12. |
| APA | Ren, JP,谷周澎,Zhao, AG,黄晨光,&吴先前.(2025).Enhancing energy absorption of star-shaped honeycombs by utilizing negative Poisson's ratio effect under high-velocity impact.INTERNATIONAL JOURNAL OF IMPACT ENGINEERING,202,12. |
| MLA | Ren, JP,et al."Enhancing energy absorption of star-shaped honeycombs by utilizing negative Poisson's ratio effect under high-velocity impact".INTERNATIONAL JOURNAL OF IMPACT ENGINEERING 202(2025):12. |
入库方式： OAI收割
来源：力学研究所
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