Mechanics of fretting fatigue

Hills, D.A.

doi:10.1016/0043-1648(94)90173-2

Cited by 207 publications

(98 citation statements)

References 14 publications

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“…Due to high utilization of the plain fatigue limits [9] of the materials and large amount of clamped sub-assemblies in the engine, fretting fatigue [5] evaluation has become extremely important. There are certain fretting-related design requirements which need to be tracked efficiently during new development projects.…”

Section: Introductionmentioning

confidence: 99%

Large bore engine connecting rod fretting analysis

Mäntylä

Göös²,

Leppänen³

et al. 2017

RakMek

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Summary.A detailed contact analysis of a large connecting rod was performed to evaluate the fretting risk in the big end. Simulation was carried out in Abaqus considering all relevant boundary conditions, such as assembly loads, housing machining and dynamics from a flexible multibody simulation with elastohydrodynamic bearings. Being one of the most important variables, the local coefficient of friction (COF) and its evolution is calculated during the solution by using a subroutine in Abaqus. The model is validated by strain gauge measurements in a running engine. The resulted friction coefficient distribution matches well with the findings from a laboratory engine. The described methodology increases the accuracy of the fretting damage prediction by using a more realistic friction coefficient definition.

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Section: Introductionmentioning

confidence: 99%

Large bore engine connecting rod fretting analysis

Mäntylä

Göös²,

Leppänen³

et al. 2017

RakMek

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“…For the solution of the mixed boundary value problem, we employ the method of singular integral equations. In classical elasticity, the general procedure of reducing mixed boundary value problems to singular integral equations is given, e.g., by Erdogan (1978), Hills and Nowell (1994). An application of the technique within the context of couple-stress elasticity for plane-strain contact problems can be found in Zisis et al (2014).…”

Section: Singular Integral Equation Approachmentioning

confidence: 99%

Analysis of the tilted flat punch in couple-stress elasticity

Gourgiotis

Zisis

Baxevanakis

2016

International Journal of Solids and Structures

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Abstract. In the present paper we explore the response of a half-plane indented by a tilted flat punch with sharp corners in the context of couple-stress elasticity theory. Contact conditions arise in a number of modern engineering applications ranging from structural and geotechnical engineering to micro and nanotechnology. As the contact scales reduce progressively the effects of the microstructure upon the macroscopic material response cannot be ignored. The generalized continuum theory of couple-stress elasticity introduces characteristic material lengths in order to describe the pertinent scale effects that emerge from the underlying material microstructure. The problem under investigation is interesting for three reasons: Firstly, the indentor's geometry is simple so that benchmark results may be extracted. Secondly, important deterioration of the macroscopic results may emerge in the case that a tilting moment is applied on the indentor inadvertently or in the case that the flat punch itself is not self-aligning so that asymmetrical contact pressure distributions arise on the contact faces. Thirdly, the voluntary application of a tilting moment on the flat punch during an experiment gives rise to potential capabilities of the flat punch for the determination of the material microstructural characteristic lengths. The solution methodology is based on singular integral equations which have resulted from a treatment of the mixed boundary value problems via integral transforms and generalized functions. The results show significant departure from the predictions of classical elasticity revealing that valuable information may be deducted from the indentation of a tilted punch of a microstructured solid.

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“…The zone of active plasticity and the region experiencing tensile circumferential stress overlap only in a small region at the peg corner, but their proximity suggests that the substrate is likely to be susceptible to fatigue cracks emerging from the corner downward at an angle somewhere in the range À135 8 <y< À 45 8 . The direction of the emerging fatigue crack at the corner of a peg fretting an uncoated substrate has been studied using an elastic analysis in [4].…”

Section: Summary Of ®Ndings and Implications For Frettingmentioning

confidence: 99%

“…The mechanics for coping with fretting is based almost entirely on elastic analysis (see, for example [3,4]). Measures of certain combinations of stresses and displacements local to the point of contact between a fretting peg and a substrate calculated from an elastic analysis have been proposed for correlating the onset of crack nucleation [5,6].…”

Section: Introductionmentioning

confidence: 99%

Plasticity in fretting of coated substrates

Begley

Hutchinson

1999

Engineering Fracture Mechanics

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A detailed analysis is performed of the plastic deformation in a metal substrate fretted by a¯at-bottomed circular peg under steady normal load and cyclic tangential load. The substrate is coated with a thin layer of soft metal. Two limiting asymptotic problems are identi®ed which characterize small scale yielding behavior in the substrate in the vicinity of the corners of the peg. Deformation within the plastic zone is characterized, including regions of elastic shakedown, steady reversed cyclic plastic straining, and strain ratchetting. Implications for nucleation of fretting cracks are discussed. #

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Mechanics of fretting fatigue

Cited by 207 publications

References 14 publications

Large bore engine connecting rod fretting analysis

Large bore engine connecting rod fretting analysis

Analysis of the tilted flat punch in couple-stress elasticity

Plasticity in fretting of coated substrates

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