The investigation on dynamic fracture behavour of materials under compressive-shear combined stress waves
文献类型：期刊论文
| 作者 | Ma W(马维) ; Duan ZP(段祝平)
|
| 刊名 | Acta Mechanica Sinica
 |
| 出版日期 | 2000 |
| 卷号 | 16期号:4页码:335-346 |
| ISSN号 | 0567-7718 |
| 通讯作者 | Ma, W (reprint author), Chinese Acad Sci, Inst Mech, LNM, Beijing 100080, Peoples R China. |
| 中文摘要 | In this paper, an improved plate impact experimental technique is presented for studying dynamic fracture mechanism of materials, under the conditions that the impacting loading is provided by a single pulse and the loading time is in the sub-microsecond range. The impacting tests are carried out on the pressure-shear gas gun. The loading rate achieved is dK/dt similar to 10(8) MPa m(1/2) s(-1). With the elimination of influence of the specimen boundary, the plane strain state of a semi-infinite crack in an infinite elastic plate is used to simulate the deformation fields of crack tip. The single pulses are obtained by using the "momentum trap" technique. Therefore, the one-time actions of the single pulse are achieved by eradicating the stress waves reflected from the specimen boundary or diffracted from the crack surfaces. In the current study, some important phenomena have been observed. The special loading of the single pulse can bring about material damage around crack tip, and affect the material behavior, such as kinking and branching of the crack propagation. Failure mode transitions from mode I to mode II crack are observed under asymmetrical impact conditions. The mechanisms of the dynamic crack propagation are consistent with the damage failure model. |
| 学科主题 | 力学 |
| 类目[WOS] | Engineering, Mechanical ; Mechanics |
| 研究领域[WOS] | Engineering ; Mechanics |
| 关键词[WOS] | PROPAGATION |
| 收录类别 | SCI ; EI ; CSCD |
| 语种 | 英语 |
| WOS记录号 | WOS:000165633700005 |
| 公开日期 | 2007-06-15 ; 2007-12-05 ; 2009-06-23 |
| 源URL | [http://dspace.imech.ac.cn/handle/311007/17578]  |
| 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 | Ma W,Duan ZP. The investigation on dynamic fracture behavour of materials under compressive-shear combined stress waves[J]. Acta Mechanica Sinica,2000,16(4):335-346. |
| APA | 马维,&段祝平.(2000).The investigation on dynamic fracture behavour of materials under compressive-shear combined stress waves.Acta Mechanica Sinica,16(4),335-346. |
| MLA | 马维,et al."The investigation on dynamic fracture behavour of materials under compressive-shear combined stress waves".Acta Mechanica Sinica 16.4(2000):335-346. |
入库方式： OAI收割
来源：力学研究所
浏览0
下载0
收藏0
其他版本
除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。