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Combined Effect of Pressure and Shear Stress on Penny-Shaped Fluid-Driven Cracks
Shen WH(沈文豪); Zhao YP(赵亚溥)
Source PublicationJOURNAL OF APPLIED MECHANICS-TRANSACTIONS OF THE ASME
2018-03-01
Volume85Issue:3Pages:31003
ISSN0021-8936
AbstractPenny-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.
Keywordpenny-shaped cracks shear stress crack propagation criterion fluid-driven cracks
DOI10.1115/1.4038719
URL查看原文
Indexed BySCI ; EI
Language英语
WOS IDWOS:000423854400003
WOS KeywordHYDRAULIC FRACTURE ; TIP ASYMPTOTICS ; PROPAGATION
WOS Research AreaMechanics
WOS SubjectMechanics
Funding OrganizationNational 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]
Classification一类/力学重要期刊
Ranking1
Citation statistics
Cited Times:1[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://dspace.imech.ac.cn/handle/311007/77910
Collection非线性力学国家重点实验室
Affiliation1.[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
Recommended Citation
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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