Approximate construction of a weight function for quarter-elliptical, semi-elliptical and elliptical cracks subjected to normal stresses

Оrynyak, І. V.; Borodii, M. V.; Torop, V. M.

doi:10.1016/0013-7944(94)90118-x

Cited by 32 publications

(17 citation statements)

References 15 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…The PWF proposed by Orynyak 20,21 for an elliptical crack in an infinite body was used as the basic WF and was given by The equation represents the weighting effects on any point Q ′ along the crack perimeter contributed by a point unit load applied at Q on the elliptical crack surface. Here, R is the distance between Q * and Q R , r the distance between Q and Q * and ℓ QQ′ the distance between Q and Q ′.…”

Section: Weight Function Formulationmentioning

confidence: 99%

“…The PWF for a circular crack in an infinite body has long been available. 17,18 Oore and Burns 19 and Orynyak et al 20,21 have developed PWFs for elliptical cracks. The formulation proposed by Oore and Burns represents the PWF in terms of a contour integral.…”

Section: Introductionmentioning

confidence: 99%

“…The PWF for a circular crack in an infinite body has long been available 17,18 . Oore and Burns 19 and Orynyak et al 20,21 . have developed PWFs for elliptical cracks.…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

An efficient stress intensity factor solution scheme for corner cracks at holes under bivariant stressing

Lee

McClung

Chell

2008

Fatigue Fract Eng Mat Struct

View full text Add to dashboard Cite

A B S T R A C T This paper summarizes the development of an efficient stress intensity factor (SIF) solution scheme applicable to a corner crack (CC) in a rectangular section subjected to arbitrary stressing on the crack plane. A general bivariant weight function (WF) formulation developed previously for a CC in a plate was extended to address a CC at a hole. Two supplemental algorithms were developed to achieve a substantial reduction in the computational time necessary for practical application. The new SIF solution scheme was validated by comparison with more than 180 three-dimensional (3D) boundary element (BE) solutions.

show abstract

Section: Weight Function Formulationmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

An efficient stress intensity factor solution scheme for corner cracks at holes under bivariant stressing

Lee

McClung

Chell

2008

Fatigue Fract Eng Mat Struct

View full text Add to dashboard Cite

show abstract

“…The PWF for a circular crack in an infinite body has long been available [7,13]. Oore and Burns [14] and Orynyak [15,16] have developed PWFs for elliptical cracks. The formulation proposed by Oore and Burns represents the PWF in terms of a contour integral.…”

Section: Development Of Bivariant Weight Function Stress Intensity Famentioning

confidence: 99%

Efficient Fracture Design for Complex Turbine Engine Components

McClung

Enright

Lee

et al. 2004

Volume 6: Turbo Expo 2004

View full text Add to dashboard Cite

Many high-energy turbine engine components are fracture critical. However, the complex three-dimensional (3d) geometries and stress fields associated with these components can make accurate fracture analysis impractical. This paper describes a new computational approach to efficient fracture design for complex turbine engine components. The approach employs a powerful 3D graphical user interface (GUI) for manipulation of geometry models and calculated component stresses to formulate simpler 2D fracture models. New weight function stress intensity factor solutions are derived to address stress gradients that vary in all directions on the fracture plane.

show abstract

“…To study the effect exerted by the model geometry (2D or 3D) on the crack growth phase, SIF values were calculated according to the type of geometry used to model the contact pair that was used between the pad and the test specimen. In those models with a plane stress or a plane strain formulation, the SIF was obtained using the weight function proposed by Orynyak [12] and calculated as follows:…”

Section: Crack Propagation Phasementioning

confidence: 99%

Effect of the model’s geometry in fretting fatigue life prediction

Vázquez

Domı́nguez

2014

Frattura Ed Integrità Strutturale

View full text Add to dashboard Cite

This paper analyses the influence that the type of geometry used to obtain the stress/strain fields in a cylindrical contact has on fretting fatigue life predictions. In addition, this work considers the effect that the fatigue crack shape assumed has on these fretting fatigue life predictions. The strain/stress fields are calculated using a series of finite elements models that consider the following three types of behaviour: plane stress, plane strain (2D geometries) and 3D. Each of these models gives a different crack initiation life and a different evolution of the stress intensity factor (SIF), which are calculated using the weight function method. These models therefore provide different fretting fatigue life predictions. Finally, the lives obtained using the numerical models are compared with experimental lives.

show abstract

Approximate construction of a weight function for quarter-elliptical, semi-elliptical and elliptical cracks subjected to normal stresses

Cited by 32 publications

References 15 publications

An efficient stress intensity factor solution scheme for corner cracks at holes under bivariant stressing

An efficient stress intensity factor solution scheme for corner cracks at holes under bivariant stressing

Efficient Fracture Design for Complex Turbine Engine Components

Effect of the model’s geometry in fretting fatigue life prediction

Contact Info

Product

Resources

About