| C(t) dominance of the mixed I/II creep crack: Part I. Transient creep | |
Dai YW1; Liu YH2; Qin F1; Qian GA(钱桂安)3 ; Chao YJ4
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| 通讯作者 | Dai, Yanwei(ywdai@bjut.edu.cn) |
| 发表期刊 | THEORETICAL AND APPLIED FRACTURE MECHANICS
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| 2019-10-01 | |
| 卷号 | 103页码:18 |
| ISSN | 0167-8442 |
| 摘要 | The mixed type crack is common to be found in engineering practices, however, the characteristics of mixed I/II creep crack tip fields have not been studied thoroughly. The aim of this part of the paper is to study the dominance of C(t)-integral for mixed I/II type creep crack tip field under transient creep. The boundary layer model is presented to investigate the dominance of C(t) under various mixed mode cases. For transient mixed mode creep crack under boundary layer model, C(t)-integral is related with the effective stress intensity factor (SIF). The near field of mixed creep crack tip field can be influenced by the remote T-stress greatly. The maximum tangential stress direction also can be influenced if the remote T-stress level is large enough. The loss dominance of the C(t) presents more remarkable under negative stress under transient creep. The relations of creep mixity factor with remote elastic mixity factor of the boundary layer model is also presented. The T-stress effects on the constraint parameter Q' and Q* are presented. The case that near the pure mode I case presents the most significant loss of constraint compared with the other mixed mode cases. The comparison between the sharp crack and blunted crack is made, and the sharpening effect is found be existed in the pure mode II case which reveals that the situation of mode II case may have a more severe damage process than that of mode I case. |
| 关键词 | C(t)-integral Constraint effect T-stress Mixed I/II Transient creep |
| DOI | 10.1016/j.tafmec.2019.102314 |
| 收录类别 | SCI ; EI |
| 语种 | 英语 |
| WOS记录号 | WOS:000489191500069 |
| 关键词[WOS] | TIP FIELDS ; MODE-I ; FINITE-ELEMENT ; STRESS-FIELDS ; CONSTRAINT ; GROWTH ; SPECIMENS ; FAILURE ; MIXITY ; SIZE |
| WOS研究方向 | Engineering ; Mechanics |
| WOS类目 | Engineering, Mechanical ; Mechanics |
| 资助项目 | China Postdoctoral Science Foundation[2019M650403] ; National Natural Science Foundation of China[11672009] ; National Natural Science Foundation of China[11672147] |
| 项目资助者 | China Postdoctoral Science Foundation ; National Natural Science Foundation of China |
| 论文分区 | 二类/Q1 |
| 力学所作者排名 | 3 |
| RpAuthor | Dai, Yanwei |
| 引用统计 | |
| 文献类型 | 期刊论文 |
| 条目标识符 | http://dspace.imech.ac.cn/handle/311007/80658 |
| 专题 | 非线性力学国家重点实验室 |
| 作者单位 | 1.Beijing Univ Technol, Coll Mech Engn & Appl Elect Technol, Beijing 100124, Peoples R China; 2.Tsinghua Univ, Dept Engn Mech, AML, Beijing 100084, Peoples R China; 3.Chinese Acad Sci, Inst Mech, Beijing, Peoples R China; 4.Univ South Carolina, 300 Main St,Room A123, Columbia, SC 29208 USA |
| 推荐引用方式 GB/T 7714 | Dai YW,Liu YH,Qin F,et al. C(t) dominance of the mixed I/II creep crack: Part I. Transient creep[J]. THEORETICAL AND APPLIED FRACTURE MECHANICS,2019,103:18. |
| APA | Dai YW,Liu YH,Qin F,钱桂安,&Chao YJ.(2019).C(t) dominance of the mixed I/II creep crack: Part I. Transient creep.THEORETICAL AND APPLIED FRACTURE MECHANICS,103,18. |
| MLA | Dai YW,et al."C(t) dominance of the mixed I/II creep crack: Part I. Transient creep".THEORETICAL AND APPLIED FRACTURE MECHANICS 103(2019):18. |
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| Jp2019401.pdf（7390KB） | 期刊论文 | 出版稿 | 开放获取 | CC BY-NC-SA | 浏览 下载 | |
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