Sharp edged contacts subject to fretting: A description of corner behaviour

Flicek, Robert C.; Hills, D.A.; Dini, Daniele

doi:10.1016/j.ijfatigue.2014.02.015

Cited by 18 publications

(16 citation statements)

References 23 publications

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“…0, with d 0 in some sense the partition between the two classes of behaviour. We note that a necessary condition for remote closure is Flicek et al 7…”

Section: Block On a Free Surfacementioning

confidence: 82%

Partial slip under complete contacts near adjacent corners

Balasubramanian

Hills

2017

The Journal of Strain Analysis for Engineering Design

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A solution has been derived for a particular case of complete contact, where the contact edge is located near to an adjacent internal corner and separated by a finite clearance. If the separation is extremely small, the gap may be thought of as a crack and, further, if the contact edge is known to be in a stuck state the classical semi-infinite crack eigensolution will define the tractions along the adjacent contact interface, and hence define the minimum coefficient of friction to ensure adhesion. For problems where this separation is small and finite, the proposed semi-infinite solution defines the tractions along the interface considering the presence of adjacent material. A finite example problem of the block resting in an elastically similar rectangular trench is considered. The solution is then applied to predict the state of edge closure and slip at various finite separations and loading conditions.

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“…0, with d 0 in some sense the partition between the two classes of behaviour. We note that a necessary condition for remote closure is Flicek et al 7…”

Section: Block On a Free Surfacementioning

confidence: 82%

Partial slip under complete contacts near adjacent corners

Balasubramanian

Hills

2017

The Journal of Strain Analysis for Engineering Design

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“…A method to determine the generalized stress intensity factors, K I and K II , in the two-parameter solution (equation (11)) is developed by picking up mode separation angles such that s uu (r, u) and s ru (r, u) subjected to modes II and I vanish for evaluating K I and K II , respectively. It enables to obtain a dimensionless form of the stress equation (equation (13)) for the present problem together with using recently developed parameters of the length and stress dimensions, d o and G o , respectively. This also allows us to look at the slipping characteristics at the contact interface in detail.…”

Section: Resultsmentioning

confidence: 99%

“…Equation (13) implies that the stress field is governed by the mode I eigensolution as r/d o !0 (i.e. as the observation point approaches to the contact edge).…”

Section: Generalized Stress Intensity Factorsmentioning

confidence: 99%

Asymptotic analysis of an adhered complete contact between elastically dissimilar materials

Kim

Hills

Paynter

2014

The Journal of Strain Analysis for Engineering Design

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A complete contact problem between elastically dissimilar materials is studied using an asymptotic analysis. A quarter plane wedge on a half-plane represents the contact edge geometry. Two eigenvalues are obtained for pairs of contacting materials, and their characteristics are classified on the Dundurs parallelogram. Generalized stress intensity factors, K I and K II , are derived to use a two-term stress equation of dimensionless form with developing a mode separation angle. It is found that the order of stress singularity increases as the wedge becomes more rigid than the half-plane. Slipping characteristics on the contact interface are investigated in detail, especially for the case of K I \ 0 \ K II that represents a typical adhesive complete contact condition. An example case is given using a finite element model to provide calibration of the stress intensities for a specific material, geometry and load combination.

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“…This can sometimes be quite a complicated process, as the stress intensity contributions from mode I and mode II loading may change sign, giving rise to local separation, and there are the competing non-linear local effects of slip (giving rise to fretting damage) and plasticity (giving rise to crack nucleation) [2,3]. For background material, these two papers should be consulted.…”

Section: Introductionmentioning

confidence: 99%

“…So, in general terms, normal loading drives the state of A stress into the (KI<0,KII>0) quadrant, implying, as intuitively expected, firm closure of the contact corner, whereas the application of a shear force or tension drives the state of stress into either the (KI>0,KII>0) or (KI<0,KII<0) quadrants. These imply some degree of local opening [2,3].…”

Section: Introductionmentioning

confidence: 99%