C(t) dominance of the mixed I/II creep crack: Part II. Extensive creep | |
Dai YW1; Liu YH2; Qin F1; Chao Y3; Qian GA(钱桂安)4 | |
发表期刊 | THEORETICAL AND APPLIED FRACTURE MECHANICS |
2020-04-01 | |
卷号 | 106页码:21 |
ISSN | 0167-8442 |
摘要 | In the Part II of this paper, two typical specimens, i.e. compact tension shear (CTS) specimen and single edge notched (SEN) specimen, are selected as the numerical cases to analyse the dominance of C*-integral for mixed I/II creep crack under extensive creep. C*-integrals under different loading angles are presented with the same loading level for CTS specimens and SEN specimens. The equivalent creep zone enlarges with the decrease of the loading angle, which implies that the lower creep mixity occupies the larger equivalent creep zone under the same loading level. A normalized stress function method based on the FE calculation is given to obtain the distribution functions of mixed I/II creep crack tip fields. The comparisons of the FE solutions and HRR field are made for CTS and SEN specimens with various crack depths, and it can be found that the loss dominance of C(t) becomes remarkable under those cases close to mode I loading. The Q-parameter computed with the tangential stress is found to be invalid to be used as the constraint parameter for mixed mode creep crack under the extensive creep regime because of the influence of blunting effect. The stress triaxiality along maximum tangential stress (MTS) direction is suitable to be selected as the constraint parameter for the mixed I/II creep crack tip field. The stress triaxiality is independent on the radial distance even in a wide range away from creep crack tip along the MTS direction. |
关键词 | Mixed I/II Creep crack C*-integral Constraint effect Stress triaxiality |
DOI | 10.1016/j.tafmec.2020.102489 |
收录类别 | SCI ; EI |
语种 | 英语 |
WOS记录号 | WOS:000519657500028 |
关键词[WOS] | TIP FIELDS ; FRACTURE-BEHAVIOR ; FINITE-ELEMENT ; STRESS-FIELD ; MODE MIXITY ; GROWTH ; SPECIMENS ; SOLIDS |
WOS研究方向 | Engineering ; Mechanics |
WOS类目 | Engineering, Mechanical ; Mechanics |
资助项目 | National Natural Science Foundation of China[11902009] ; National Natural Science Foundation of China[11672009] ; National Natural Science Foundation of China[11672147] ; National Natural Science Foundation of China[11872364] ; Beijing Natural Science Foundation[2204074] ; Scientific Research Common Program of Beijing Municipal Commission of Education[KM202010005034] ; CAS Pioneer Hundred Talents Program |
项目资助者 | National Natural Science Foundation of China ; Beijing Natural Science Foundation ; Scientific Research Common Program of Beijing Municipal Commission of Education ; CAS Pioneer Hundred Talents Program |
论文分区 | 二类/Q1 |
力学所作者排名 | 4 |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://dspace.imech.ac.cn/handle/311007/81772 |
专题 | 非线性力学国家重点实验室 |
通讯作者 | Dai YW; Liu YH; Qin F |
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.Univ South Carolina, 300 Main St,Room A123, Columbia, SC 29208 USA 4.Chinese Acad Sci, Inst Mech, State Key Lab Nonlinear Mech LNM, Beijing 100190, Peoples R China |
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 II. Extensive creep[J]. THEORETICAL AND APPLIED FRACTURE MECHANICS,2020,106:21. |
APA | Dai YW,Liu YH,Qin F,Chao Y,&Qian GA.(2020).C(t) dominance of the mixed I/II creep crack: Part II. Extensive creep.THEORETICAL AND APPLIED FRACTURE MECHANICS,106,21. |
MLA | Dai YW,et al."C(t) dominance of the mixed I/II creep crack: Part II. Extensive creep".THEORETICAL AND APPLIED FRACTURE MECHANICS 106(2020):21. |
条目包含的文件 | 下载所有文件 | |||||
文件名称/大小 | 文献类型 | 版本类型 | 开放类型 | 使用许可 | ||
Jp2020551.pdf(20331KB) | 期刊论文 | 出版稿 | 开放获取 | CC BY-NC-SA | 浏览 下载 |
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。
修改评论