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Combined Effect of Pressure and Shear Stress on Penny-Shaped Fluid-Driven Cracks

文献类型：期刊论文

作者Shen WH(沈文豪); Zhao YP(赵亚溥)
刊名JOURNAL OF APPLIED MECHANICS-TRANSACTIONS OF THE ASME
出版日期2018-03-01
卷号85期号:3页码:31003
关键词penny-shaped cracks shear stress crack propagation criterion fluid-driven cracks
ISSN号0021-8936
DOI10.1115/1.4038719
英文摘要Penny-shaped fluid-driven cracks are often detected in many fluid-solid interaction problems. We study the combined effect of pressure and shear stress on the crack propagation in an impermeable elastic full space. Boundary integral equations are presented, by using the integral transform method, for a penny-shaped crack under normal and shear stresses. The crack propagation criterion of stress intensity factor is examined with the strain energy release rate. Dominant regimes are obtained by using a scaling analysis. Asymptotic solution of the toughness-dominant regime is derived to show the effect of shear stress on the crack opening, crack length, and pressure distribution. The results indicate that a singular shear stress can dominate the asymptotic property of the stress field near the crack tip, and the stress intensity factor cannot be calculated even though the energy release rate is finite. Shear stress leads to a smaller crack opening, a longer crack, and a slightly larger wellbore pressure. A novel dominant-regime transition between shear stress and pressure is found. Unstable crack propagation occurs in the shear stress-dominant regime. This study may help in understanding crack problems under symmetrical loads and modeling fluid-solid interactions at the crack surfaces.
分类号一类/力学重要期刊
URL标识查看原文
WOS关键词HYDRAULIC FRACTURE ; TIP ASYMPTOTICS ; PROPAGATION
WOS研究方向Mechanics
语种英语
WOS记录号WOS:000423854400003
资助机构National Natural Science Foundation of China [11372313, 11611130019, U1562105] ; Chinese Academy of Sciences (CAS) through CAS Interdisciplinary Innovation Team Project, the CAS Key Research Program of Frontier Sciences [QYZDJ-SSW-449JSC019] ; CAS Strategic Priority Research Program [XDB22040401]
源URL[http://dspace.imech.ac.cn/handle/311007/77910]  
专题力学研究所_非线性力学国家重点实验室
作者单位1.[Shen, Wenhao
2.Chinese Acad Sci, Inst Mech, State Key Lab Nonlinear Mech LNM, Beijing 100190, Peoples R China
3.[Shen, Wenhao
4.Univ Chinese Acad Sci, Sch Engn Sci, Beijing 100049, Peoples R China
推荐引用方式
GB/T 7714		 Shen WH,Zhao YP. Combined Effect of Pressure and Shear Stress on Penny-Shaped Fluid-Driven Cracks[J]. JOURNAL OF APPLIED MECHANICS-TRANSACTIONS OF THE ASME,2018,85(3):31003.
APA 沈文豪,&赵亚溥.(2018).Combined Effect of Pressure and Shear Stress on Penny-Shaped Fluid-Driven Cracks.JOURNAL OF APPLIED MECHANICS-TRANSACTIONS OF THE ASME,85(3),31003.
MLA 沈文豪,et al."Combined Effect of Pressure and Shear Stress on Penny-Shaped Fluid-Driven Cracks".JOURNAL OF APPLIED MECHANICS-TRANSACTIONS OF THE ASME 85.3(2018):31003.

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来源：力学研究所

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