Energy-absorption behavior of metallic hollow sphere structures under impact loading
文献类型：期刊论文
| 作者 | Song, Jinliang1,2,3; Hu, Dawei2; Luo, Shengmin3; Liu, Wanshu1; Wang, Dongfang3; Sun, Quansheng1; Zhang, Guoping3 |
| 刊名 | ENGINEERING STRUCTURES
 |
| 出版日期 | 2021 |
| 卷号 | 226页码:15 |
| 关键词 | Anti-collision Bridge pier Energy absorption Impact loading Metallic hollow sphere structures |
| ISSN号 | 0141-0296 |
| DOI | 10.1016/j.engstruct.2020.111350 |
| 英文摘要 | An integrated experimental and computation study is presented of the energy-absorption behavior of metallic hollow sphere structures (MHSS) as an innovative anti-collision material to protect bridge piers from vehicle impact loading. Quasi-static compression and dynamic split Hopkinson pressure bar impact testing were first conducted to compare different deformation and energy-absorption characteristics of MHSS subjected to different loading modes, followed by more realistic laboratory downscaled model impact testing and finite element modeling (FEM) of collisions between real-scale bridge piers and vehicle to further examine the energy absorption capability of MHSS under dynamic loading. Results show that the MHSS exhibits an increased structural stiffness (e.g., by similar to 20 times), yield strength (by 4-5 times), and toughness (by 200%) with increasing loading rate (i.e., from static to impact loading). When used as a protective layer on bridge piers, the downscaled model tests and FEM simulations validated the MHSS can provide remarkable anti-collision function to concrete structures: MHSS can substantially reduce the horizontal accelerations (by 63-68%), displacements (by 56.6%), and surface strains of bridge piers, and there reductions further increases with impact velocity. The high energy absorption capability of MHSS may originates from the exceptionally high, multiscale porosity as well as the excellent mechanical properties of the MHSS material. The findings suggest that MHSS can be an effective energy-absorptive material for anti-collision protection of bridge structures. |
| 资助项目 | National Key Research and Development Program of China[2018YFC0809601] ; Hubei Province Natural Science Foundation Innovation Group[2018CFA013] ; China Scholarship Council |
| WOS研究方向 | Engineering |
| 语种 | 英语 |
| WOS记录号 | WOS:000594683900002 |
| 出版者 | ELSEVIER SCI LTD |
| 源URL | [http://119.78.100.198/handle/2S6PX9GI/25285]  |
| 专题 | 中科院武汉岩土力学所 |
| 通讯作者 | Sun, Quansheng; Zhang, Guoping |
| 作者单位 | 1.Northeast Forestry Univ, Dept Civil Engn, Harbin 150040, Peoples R China 2.Chinese Acad Sci, Inst Rock & Soil Mech, State Key Lab Geomech & Geotech Engn, Wuhan 430071, Hubei, Peoples R China 3.Univ Massachusetts, Dept Civil & Environm Engn, Amherst, MA 01003 USA |
| 推荐引用方式 GB/T 7714 | Song, Jinliang,Hu, Dawei,Luo, Shengmin,et al. Energy-absorption behavior of metallic hollow sphere structures under impact loading[J]. ENGINEERING STRUCTURES,2021,226:15. |
| APA | Song, Jinliang.,Hu, Dawei.,Luo, Shengmin.,Liu, Wanshu.,Wang, Dongfang.,...&Zhang, Guoping.(2021).Energy-absorption behavior of metallic hollow sphere structures under impact loading.ENGINEERING STRUCTURES,226,15. |
| MLA | Song, Jinliang,et al."Energy-absorption behavior of metallic hollow sphere structures under impact loading".ENGINEERING STRUCTURES 226(2021):15. |
入库方式： OAI收割
来源：武汉岩土力学研究所
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