Modeling of surface and subsurface crack behavior under contact load in the presence of lubricant

Kudish, Ilya I.; Burris, Kenneth W.

doi:10.1023/b:frac.0000021022.48417.a6

Cited by 18 publications

(12 citation statements)

References 14 publications

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“…Free surface friction has negligible influence on the stress intensity factor K I (Kudish and Burris, 2004). Increasing the contact friction results in increase of the T-stress, while the stress intensity factor K II decreases for the case where the moving loaded contact region reaches the crack mouth.…”

Section: Discussionmentioning

confidence: 93%

“…Experimental results showed that the trapped fluid inside the crack can cause crack propagation as presented in Figure 7b (Kaneta and Murakami, 1987). • Multiple cavities could be completely or partially filled with lubricant and can join into a single cavity or get separated one from another (Kudish and Burris, 2004). The maximum stress intensity factors K I and K II are reached when the moving loaded contact region reaches the crack mouth.…”

Section: Simulation Of Moving Contact and Of Lubricant Trapped In Thementioning

confidence: 99%

“…In this paper it is assumed that the maximum values of K I , K II and T, which occur when the moving loaded contact region reaches the crack mouth, have the strongest influence on crack propagation path (Bower, 1998;Datsyshyn and Panasyuk, 2001;Kudish and Burris, 2004). For ease of application, the second approach (hydraulic pressure mechanism with constant pressure to the crack surfaces) is considered in this paper.…”

Section: Simulation Of Moving Contact and Of Lubricant Trapped In Thementioning

confidence: 99%

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Modelling of Surface Crack Growth under Lubricated Rolling–Sliding Contact Loading

et al. 2005

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The paper describes modelling approach to computational simulation of surface crack growth subjected to lubricated rolling-sliding contact conditions. The model considers the size and orientation of the initial crack, normal and tangential loading due to rolling-sliding contact and the influence of fluid trapped inside the crack by a hydraulic pressure mechanism. The motion of the contact sliding load is simulated with different load cases. The strain energy density (SED) and maximum tangential stress (MTS) crack propagation criteria are modified to account for the influence of internal pressure along the crack surfaces due to trapped fluid. The developed model is used to simulate surface crack growth on a gear tooth flank, which has been also experimentally tested. It is shown that the crack growth path, determined with modified crack propagation criteria, is more accurately predicted than by using the criteria in its classical form.

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Section: Discussionmentioning

confidence: 93%

Section: Simulation Of Moving Contact and Of Lubricant Trapped In Thementioning

confidence: 99%

Section: Simulation Of Moving Contact and Of Lubricant Trapped In Thementioning

confidence: 99%

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Modelling of Surface Crack Growth under Lubricated Rolling–Sliding Contact Loading

et al. 2005

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“…Therefore, at this point in (16), the operation of minimum over the material volume V can be dropped. By solving (16) and (17), one gets…”

Section: Fatigue Life Calculationmentioning

confidence: 99%

Fracture Mechanics Based Models of Structural and Contact Fatigue

Kudish¹

2012

Applied Fracture Mechanics

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The approach presented in this section provides a unified model of contact and structural fatigue of materials [1,2]. The model development is based on a block approach, i.e. each block of the model describes a certain process related to fatigue and can be easily replaced by another block describing the same process differently. For example, accumulation of new more advanced knowledge of the process of fatigue crack growth may provide an opportunity to replaced the proposed here block dealing with fatigue crack growth with an improved one. Two examples of the application of this model to structural fatigue are provided. Initial statistical defect distributionIt is assumed that material defects are far from each other and practically do not interact. However, in some cases clusters of nonmetallic inclusions located very close to each other

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“…The previous studies (Way 1935;Keer and Bryant 1983;Kaneta et al 1985;Bower 1988;Kudish 1995;Chue and Chung 2000;Datsyshyn et al , 2004Datsyshyn and Levus 2003;Kudish and Burris 2004;Zafošnik et al 2004;Bogdañski et al 2005) largely dealing with edge cracks have found their applications in tribology when modeling the surface pitting mechanisms. In a series of studies, Datsyshyn and her coworkers (Datsyshyn et al , 2004Datsyshyn and Levus 2003) have investigated the trajectories of propagation of an edge crack under the conditions of boundary lubrication.…”

mentioning

confidence: 99%

Numerical simulation of growth pattern of a fluid-filled subsurface crack under moving hertzian loading

2007

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Cracking of a fluid-filled subsurface crack is studied by means of the distributed dislocation technique within the framework of twodimensional linear elastic fracture mechanics. The Griffith crack was initially opened by the application of hydrostatic pressure of an incompressible fluid within the crack. A moving Hertz line contact load distribution is applied at the surface of the half-plane in the presence of friction. The stress intensity factors at the tips of the fluid-filled crack are analyzed with the restriction that due to the fluid incompressibility there is no change of the crack-opening volume. When the crack starts to propagate/kink, numerical results show that the internal fluid pressure will be relieved, and as the ratio of the branched crack length to main crack length increases, the elastic strain energy release rate decreases. The crack growth is assumed to be arrested when the energy release rate is below a certain value. Based on the energy criterion, predictions are attempted for determining the load position where the crack propagation/kink commences as well as the growth increment of the branch crack before it is arrested. A step-by-step crack path is constructed to simulate the growth pattern of the fluid-filled crack under moving Hertzian loading.

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Modeling of surface and subsurface crack behavior under contact load in the presence of lubricant

Cited by 18 publications

References 14 publications

Modelling of Surface Crack Growth under Lubricated Rolling–Sliding Contact Loading

Modelling of Surface Crack Growth under Lubricated Rolling–Sliding Contact Loading

Fracture Mechanics Based Models of Structural and Contact Fatigue

Numerical simulation of growth pattern of a fluid-filled subsurface crack under moving hertzian loading

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