Assessment of multiple flat elliptical cracks with interactions

Jones, Rhys; Peng, Daren; Pitt, Susan

doi:10.1016/s0167-8442(02)00098-8

Cited by 12 publications

(4 citation statements)

References 24 publications

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“…Failure in pressure vessel and piping components (Moussa, Bell, & Tan, 1999;Murakami & Nasser, 1982) Collinear cracks and flat elliptical cracks Multiple site damage in aircraft structures (Gorbatikh & Kachanov, 2000;Jeong & Brewer, 1995;Jones, Peng, & Pitt, 2002;Milwater, 2010;Pitt, Jones, & Atluri, 1999) Multiple flaws and surface cracks Failure of nuclear power plant components (Kamaya, Miyokawa, & Kikuchi, 2010;Kobayashi & Kashima, 2000) Penny-shaped cracks Brittle fracture of welded structures in pressure vessels (Saha & Ganguly, 2005) Offset collinear and layered cracks…”

Section: Edge Cracksmentioning

confidence: 99%

Interacting Cracks Analysis Using Finite Element Method

Daud¹,

Ariffin²,

Abdullah³

et al. 2012

Applied Fracture Mechanics

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Section: Edge Cracksmentioning

confidence: 99%

Interacting Cracks Analysis Using Finite Element Method

Daud¹,

Ariffin²,

Abdullah³

et al. 2012

Applied Fracture Mechanics

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“…Jonesa et.al. [2] analyzed interacting multiple cracks using finite element method (FEM) and a hybrid formulation which represents stiffness changes. Yan analyzed interacting multiple cracks and complex crack configurations in linear elastic media using an effective numerical method which is an extended form of Bueckners' princible [3].…”

Section: Introductionmentioning

confidence: 99%

Multiple and non-planar crack propagation analyses in thin structures using FCPAS

Dündar¹,

Ayhan²

2015

Frattura Ed Integrità Strutturale

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In this study, multiple and non-planar crack propagation analyses are performed using Fracture and Crack Propagation Analysis System (FCPAS). In an effort to apply and validate FCPAS procedures for multiple and non-planar crack propagation analyses, various problems are solved and the results are compared with data available in the literature. The method makes use of finite elements, specifically three-dimensional enriched elements to compute stress intensity factors (SIFs) without special meshing requirements. A fatigue crack propagation criterion, such as Paris-Erdoğan equation, is also used along with stress intensity factors to conduct the simulation. Finite element models are generated within ANSYS™ software, converted into and solved in FRAC3D program, which employs enriched crack tip elements. Having computed the SIFs for a given crack growth increment and using a growth criterion, the next incremental crack path is predicted and the fracture model is updated to reflect the non-planar crack growth. This procedure is repeated until cracks reach a desired length or when SIFs exceed the fracture toughness of the material. It is shown that FCPAS results are in good agreement with literature data in terms of SIFs, crack paths and crack growth life of the structure. Thus, accuracy and reliability of FCPAS software for multiple and non-planar crack propagation in thin structures is proven.

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“…In practice this is done in pressure vessels, aircraft attachment lugs, etc. (ASME Boiler and Pressure Vessel Code, 1977;Jones et al, 2002). Recently, after the development of some sophisticated numerical methods, researchers have shown their interest in elliptic crack problems.…”

Section: Introductionmentioning

confidence: 99%

“…For a brief review of these works one may refer to Nishioka and Kato (1998). Another aspect of these investigations is that almost all these are carried out with the help of one or the other of various numerical methods developed in recent years (Guozhong et al, 1996;Nishioka and Kato, 1998;Jones et al, 2002). But one must not forget that benchmark solutions are necessary for validating these numerical solutions wherever possible.…”

Section: Introductionmentioning

confidence: 99%

Interaction of a penny-shaped crack with an elliptic crack under shear loading

Saha¹,

Ganguly

2005

Int J Fract

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The problem of interaction between equal coplanar elliptic cracks embedded in a homogeneous isotropic elastic medium and subjected to shear loading was solved analytically by Saha et al. (1999) International Journal of Solids and Structures 36, 619-637, using an integral equation method. In the present study the same integral equation method has been used to solve the title problem. Analytical expression for the two tangential crack opening displacement potentials have been obtained as series in terms of the crack separation parameter β i up to the order β 5 i , (i = 1, 2) for both the elliptic as well as penny-shaped crack. Expressions for modes II and III stress intensity factors have been given for both the cracks. The present solution may be treated as benchmark to solutions of similar problems obtained by various numerical methods developed recently. The analytical results may be used to obtain solutions for interaction between macro elliptic crack and micro penny-shaped crack or vice-versa when the cracks are subjected to shear loading and are not too close. Numerical results of the stress-intensity magnification factor has been illustrated graphically for different aspect ratios, crack sizes, crack separations, Poisson ratios and loading angles. Also the present results have been compared with the existing results of Kachanov and Laures (1989) International Journal of Fracture 41, 289-313, for equal penny-shaped cracks and illustrations have been given also for the special case of interaction between unequal penny-shaped cracks subjected to uniform shear loading.

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Assessment of multiple flat elliptical cracks with interactions

Cited by 12 publications

References 24 publications

Interacting Cracks Analysis Using Finite Element Method

Interacting Cracks Analysis Using Finite Element Method

Multiple and non-planar crack propagation analyses in thin structures using FCPAS

Interaction of a penny-shaped crack with an elliptic crack under shear loading

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