Evolution induced catastrophe in a nonlinear dynamical model of material failure
文献类型：期刊论文
| 作者 | Xia MF(夏蒙棼); Ke FJ(柯孚久) ; Wei YJ(魏宇杰); Bai YL(白以龙)
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| 刊名 | Nonlinear Dynamics
 |
| 出版日期 | 2000 |
| 卷号 | 22期号:2页码:205-224 |
| ISSN号 | 0924-090X |
| 通讯作者 | Xia, MF (reprint author), Chinese Acad Sci, Inst Mech, Lab Nonlinear Mech Continuous Media, Beijing 100080, Peoples R China. |
| 中文摘要 | In order to study the failure of disordered materials, the ensemble evolution of a nonlinear chain model was examined by using a stochastic slice sampling method. The following results were obtained. (1) Sample-specific behavior, i.e. evolutions are different from sample to sample in some cases under the same macroscopic conditions, is observed for various load-sharing rules except in the globally mean field theory. The evolution according to the cluster load-sharing rule, which reflects the interaction between broken clusters, cannot be predicted by a simple criterion from the initial damage pattern and even then is most complicated. (2) A binary failure probability, its transitional region, where globally stable (GS) modes and evolution-induced catastrophic (EIC) modes coexist, and the corresponding scaling laws are fundamental to the failure. There is a sensitive zone in the vicinity of the boundary between the GS and EIC regions in phase space, where a slight stochastic increment in damage can trigger a radical transition from GS to EIC. (3) The distribution of strength is obtained from the binary failure probability. This, like sample-specificity, originates from a trans-scale sensitivity linking meso-scopic and macroscopic phenomena. (4) Strong fluctuations in stress distribution different from that of GS modes may be assumed as a precursor of evolution-induced catastrophe (EIC). |
| 学科主题 | 力学 |
| 类目[WOS] | Engineering, Mechanical ; Mechanics |
| 研究领域[WOS] | Engineering ; Mechanics |
| 关键词[WOS] | SENSITIVITY ; STRENGTH ; FRACTURE |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000087601000005 |
| 公开日期 | 2007-06-15 ; 2007-12-05 ; 2009-06-23 |
| 源URL | [http://dspace.imech.ac.cn/handle/311007/16756]  |
| 专题 | 力学研究所_力学所知识产出(1956-2008) |
| 推荐引用方式 GB/T 7714 | Xia MF,Ke FJ,Wei YJ,et al. Evolution induced catastrophe in a nonlinear dynamical model of material failure[J]. Nonlinear Dynamics,2000,22(2):205-224. |
| APA | 夏蒙棼,柯孚久,魏宇杰,&白以龙.(2000).Evolution induced catastrophe in a nonlinear dynamical model of material failure.Nonlinear Dynamics,22(2),205-224. |
| MLA | 夏蒙棼,et al."Evolution induced catastrophe in a nonlinear dynamical model of material failure".Nonlinear Dynamics 22.2(2000):205-224. |
入库方式： OAI收割
来源：力学研究所
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