The impact of various crack geometrical parameters on stress field over tip under different mixed loading conditions and inclination angles
文献类型：期刊论文
| 作者 | Wang, Luyu; Chen, Weizhong; Tan, Xuyan; Yang, Jianping |
| 刊名 | THEORETICAL AND APPLIED FRACTURE MECHANICS
 |
| 出版日期 | 2019 |
| 卷号 | 102期号:-页码:239-254 |
| 关键词 | Crack tip Stress distribution Stress intensity factor Complex loading Geometrical parameter |
| ISSN号 | 0167-8442 |
| DOI | 10.1016/j.tafmec.2018.12.001 |
| 英文摘要 | Mixed mode fracturing behaviors in brittle materials are ubiquitous occurring in practicing engineering. Especially for rocks, tensile-shear loadings are one type of basic factors inducing failures. This paper presented analytical and numerical solutions to investigate the variations of stress field over crack front vicinity under different complex loading conditions and geometrical parameters. An analytical solution for crack under mixed loadings and various geometrical parameters (i.e. inclination angle alpha and shape parameter m of crack) was proposed, which also considers shear loadings both applying on internal boundary (i.e. crack surface) and external boundary (i.e. distance far away crack). The analytical solution for the model by complex potential method has been suggested. Numerical simulations have been carried out to verify the analytical solution of stress distribution adjacent to crack tip, in which the analytical solutions show good agreement with the numerical results. Three dimensionless loading coefficients () were defined to reflect the magnitudes of biaxial loading, external shearing and internal shearing, respectively. The characteristics of stress distribution, shearing effects and initiation stress were studied deeply under different with various alpha, m, and the effects of varied conditions on stress magnitude variations have been discussed. According to the solution, we derived the explicit expressions of stress intensity factor (SIF) under different loading situations. Considering the effects of various crack inclination angles and shear loadings, the variations of normalized SIF ratio 2/pi arctan(K-I/K-II) with various conditions also have been discussed. In conclusion, loadings and geometrical variations both have strongly effects on stress distributions around the tip, and the influences have the relationship with different situations. |
| WOS研究方向 | Engineering ; Mechanics |
| 语种 | 英语 |
| WOS记录号 | WOS:000480512300020 |
| 源URL | [http://119.78.100.198/handle/2S6PX9GI/14926]  |
| 专题 | 岩土力学所知识全产出_期刊论文 国家重点实验室知识产出_期刊论文 |
| 作者单位 | 1.Chinese Acad Sci, Inst Rock & Soil Mech, State Key Lab Geomech & Geotech Engn, Wuhan 430071, Hubei, Peoples R China; 2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China; 3.Shandong Univ, Res Ctr Geotech & Struct Engn, Jinan 250100, Shandong, Peoples R China |
| 推荐引用方式 GB/T 7714 | Wang, Luyu,Chen, Weizhong,Tan, Xuyan,et al. The impact of various crack geometrical parameters on stress field over tip under different mixed loading conditions and inclination angles[J]. THEORETICAL AND APPLIED FRACTURE MECHANICS,2019,102(-):239-254. |
| APA | Wang, Luyu,Chen, Weizhong,Tan, Xuyan,&Yang, Jianping.(2019).The impact of various crack geometrical parameters on stress field over tip under different mixed loading conditions and inclination angles.THEORETICAL AND APPLIED FRACTURE MECHANICS,102(-),239-254. |
| MLA | Wang, Luyu,et al."The impact of various crack geometrical parameters on stress field over tip under different mixed loading conditions and inclination angles".THEORETICAL AND APPLIED FRACTURE MECHANICS 102.-(2019):239-254. |
入库方式： OAI收割
来源：武汉岩土力学研究所
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。