Non-trivial avalanches triggered by shear banding in compression of metallic glass foams
文献类型：期刊论文
| 作者 | Lin H(林浩)2,3; Lu C1 ; Wang HY(汪海英)2,3; Dai LH(戴兰宏)2,3
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| 刊名 | PROCEEDINGS OF THE ROYAL SOCIETY A-MATHEMATICAL PHYSICAL AND ENGINEERING SCIENCES
 |
| 出版日期 | 2020-08-26 |
| 卷号 | 476期号:2240页码:19 |
| 关键词 | metallic glass foam shear banding avalanches |
| ISSN号 | 1364-5021 |
| DOI | 10.1098/rspa.2020.0186 |
| 通讯作者 | Lin, H.(linhao@imech.ac.cn) ; Dai, L. H.(lhdai@lnm.imech.ac.cn) |
| 英文摘要 | Ductile metallic glass foams (DMGFs) are a new type of structural material with a perfect combination of high strength and toughness. Owing to their disordered atomic-scale microstructures and randomly distributed macroscopic voids, the compressive deformation of DMGFs proceeds through multiple nanoscale shear bands accompanied by local fracture of cellular structures, which induces avalanche-like intermittences in stress-strain curves. In this paper, we present a statistical analysis, including distributions of avalanche size, energy dissipation, waiting times and aftershock sequence, on such a complex dynamic process, which is dominated by shear banding. After eliminating the influence of structural disorder, we demonstrate that, in contrast to the mean-field results of their brittle counterparts, scaling laws in DMGFs are characterized by different exponents. It is shown that the occurrence of non-trivial scaling behaviours is attributed to the localized plastic yielding, which effectively prevents the system from building up a long-range correlation. This accounts for the high structural stability and energy absorption performance of DMGFs. Furthermore, our results suggest that such shear banding dynamics introduce an additional characteristic time scale, which leads to a universal gamma distribution of waiting times. |
| 分类号 | 二类 |
| WOS关键词 | MEAN-FIELD THEORY ; AFTERSHOCK SEQUENCES ; RAPID SHEAR ; DEFORMATION ; FAILURE ; LOCALIZATION ; GROWTH ; STABILITY ; PARKFIELD ; MODEL |
| 资助项目 | National Key Research and Development Program of China[2017YFB0702003] ; National Key Research and Development Program of China[2017YFB0701502] ; National Natural Science Foundation of China[11672316] ; National Natural Science Foundation of China[11790292] ; Science Challenge Project[TZ2016001] ; Opening Fund of State Key Laboratory of Nonlinear Mechanics ; Open Fund of State Key Laboratory for GeoMechanics and Deep Underground Engineering, China University of Mining and Technology (Beijing)[SKLGDUEK1516] |
| WOS研究方向 | Science & Technology - Other Topics |
| 语种 | 英语 |
| WOS记录号 | WOS:000564233400001 |
| 资助机构 | National Key Research and Development Program of China ; National Natural Science Foundation of China ; Science Challenge Project ; Opening Fund of State Key Laboratory of Nonlinear Mechanics ; Open Fund of State Key Laboratory for GeoMechanics and Deep Underground Engineering, China University of Mining and Technology (Beijing) |
| 其他责任者 | Lin, H. ; Dai, L. H. |
| 源URL | [http://dspace.imech.ac.cn/handle/311007/84986]  |
| 专题 | 力学研究所_非线性力学国家重点实验室 |
| 作者单位 | 1.Curtin Univ, Sch Civil & Mech Engn, Perth, WA 6845, Australia 2.Univ Chinese Acad Sci, Sch Engn Sci, Beijing 101408, Peoples R China; 3.Chinese Acad Sci, Inst Mech, State Key Lab Nonlinear Mech, Beijing 100190, Peoples R China; |
| 推荐引用方式 GB/T 7714 | Lin H,Lu C,Wang HY,et al. Non-trivial avalanches triggered by shear banding in compression of metallic glass foams[J]. PROCEEDINGS OF THE ROYAL SOCIETY A-MATHEMATICAL PHYSICAL AND ENGINEERING SCIENCES,2020,476(2240):19. |
| APA | 林浩,Lu C,汪海英,&戴兰宏.(2020).Non-trivial avalanches triggered by shear banding in compression of metallic glass foams.PROCEEDINGS OF THE ROYAL SOCIETY A-MATHEMATICAL PHYSICAL AND ENGINEERING SCIENCES,476(2240),19. |
| MLA | 林浩,et al."Non-trivial avalanches triggered by shear banding in compression of metallic glass foams".PROCEEDINGS OF THE ROYAL SOCIETY A-MATHEMATICAL PHYSICAL AND ENGINEERING SCIENCES 476.2240(2020):19. |
入库方式： OAI收割
来源：力学研究所
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