Crack propagation in structures subjected to periodic excitation
文献类型：期刊论文
| 作者 | Zhang Y(张吟) ; Kevin DM
|
| 刊名 | Acta Mechanica Solida Sinica
 |
| 出版日期 | 2007 |
| 卷号 | 20期号:3页码:236-246 |
| 关键词 | Crack Propagation/Arrest Elastic Foundation Modal Analysis Vibration Natural Frequency Bimaterial Interfaces Fracture Instability Toughness Criteria Force Loads |
| ISSN号 | 0894-9166 |
| 通讯作者 | Yin, Z (reprint author), Chinese Acad Sci, Inst Mech, State Key Lab Nonlinear Mech, Beijing 100080, Peoples R China. |
| 中文摘要 | In the present paper, a simple mechanical model is developed to predict the dynamic response of a cracked structure subjected to periodic excitation, which has been used to identify the physical mechanisms in leading the growth or arrest of cracking. The structure under consideration consists of a beam with a crack along the axis, and thus, the crack may open in Mode I and in the axial direction propagate when the beam vibrates. In this paper, the system is modeled as a cantilever beam lying on a partial elastic foundation, where the portion of the beam on the foundation represents the intact portion of the beam. Modal analysis is employed to obtain a closed form solution for the structural response. Crack propagation is studied by allowing the elastic foundation to shorten (mimicking crack growth) if a displacement criterion, based on the material toughness, is met. As the crack propagates, the structural model is updated using the new foundation length and the response continues. From this work, two mechanisms for crack arrest are identified. It is also shown that the crack propagation is strongly influenced by the transient response of the structure. |
| 类目[WOS] | Materials Science, Multidisciplinary ; Mechanics |
| 研究领域[WOS] | Materials Science ; Mechanics |
| 关键词[WOS] | BIMATERIAL INTERFACES ; FRACTURE ; INSTABILITY ; TOUGHNESS ; CRITERIA ; FORCE ; LOADS |
| 收录类别 | SCI ; EI |
| 语种 | 英语 |
| WOS记录号 | WOS:000250454300007 |
| 公开日期 | 2009-08-03 ; 2010-06-13 |
| 源URL | [http://dspace.imech.ac.cn/handle/311007/33889]  |
| 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 | Zhang Y,Kevin DM. Crack propagation in structures subjected to periodic excitation[J]. Acta Mechanica Solida Sinica,2007,20(3):236-246. |
| APA | 张吟,&Kevin DM.(2007).Crack propagation in structures subjected to periodic excitation.Acta Mechanica Solida Sinica,20(3),236-246. |
| MLA | 张吟,et al."Crack propagation in structures subjected to periodic excitation".Acta Mechanica Solida Sinica 20.3(2007):236-246. |
入库方式： OAI收割
来源：力学研究所
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