| Non-trivial avalanches triggered by shear banding in compression of metallic glass foams | |
Lin H(林浩)1,2; Lu C3 ; Wang HY(汪海英)1,2; Dai LH(戴兰宏)1,2
| |
| Corresponding Author | Lin, H.([email protected]) ; Dai, L. H.([email protected]) |
| Source Publication | PROCEEDINGS OF THE ROYAL SOCIETY A-MATHEMATICAL PHYSICAL AND ENGINEERING SCIENCES
 |
| 2020-08-26 | |
| Volume | 476Issue:2240Pages:19 |
| ISSN | 1364-5021 |
| Abstract | 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. |
| Keyword | metallic glass foam shear banding avalanches |
| DOI | 10.1098/rspa.2020.0186 |
| Indexed By | SCI ; EI |
| Language | 英语 |
| WOS ID | WOS:000564233400001 |
| WOS Keyword | MEAN-FIELD THEORY ; AFTERSHOCK SEQUENCES ; RAPID SHEAR ; DEFORMATION ; FAILURE ; LOCALIZATION ; GROWTH ; STABILITY ; PARKFIELD ; MODEL |
| WOS Research Area | Science & Technology - Other Topics |
| WOS Subject | Multidisciplinary Sciences |
| Funding Project | 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] |
| Funding Organization | 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) |
| Classification | 二类 |
| Ranking | 1 |
| Contributor | Lin, H. ; Dai, L. H. |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://dspace.imech.ac.cn/handle/311007/84987 |
| Collection | 非线性力学国家重点实验室 |
| Affiliation | 1.Chinese Acad Sci, Inst Mech, State Key Lab Nonlinear Mech, Beijing 100190, Peoples R China; 2.Univ Chinese Acad Sci, Sch Engn Sci, Beijing 101408, Peoples R China; 3.Curtin Univ, Sch Civil & Mech Engn, Perth, WA 6845, Australia |
| Recommended Citation 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.Rp_Au:Lin, H., Dai, L. H. |
| 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. |
| Files in This Item: | Download All | |||||
| File Name/Size | DocType | Version | Access | License | ||
| Jp2020283.pdf（1876KB） | 期刊论文 | 出版稿 | 开放获取 | CC BY-NC-SA | View Download | |
Items in the repository are protected by copyright, with all rights reserved, unless otherwise indicated.
Edit Comment