Fretting fatigue predictions in a complex coupling

Finite element implementation of multiaxial continuum damage mechanics for plain and fretting fatigue

“…A critical plane approach incorporating the Smith-WatsonTopper [1] fatigue parameter has also been adopted here, for comparative purposes, to predict multiaxial fatigue, following the methodology established by Sum et al [17] and further developed in [15] for application to fretting crack nucleation. It was shown in [17] that the FE-implementation of this approach can capture stress gradient effects, e.g.…”

“…This decreases the fatigue performance of mechanical components and is known as fretting fatigue. Many real-life service components have the potential to experience fretting damage, such as aero-engine spline couplings [1] and hip joint implants, where the stem and femoral head are in contact. To predict fretting fatigue location and life for such complex geometries, an amalgamation of two methods is normally required, namely finite element analysis and life prediction.…”

Cyclic plastic behavior of dovetail under fretting load

“…Dovetail assemblies are widely used to attach fan and compressor blades to discs in gas turbine engines, the fretting fatigue becomes an important failure mode due to the low cycle fatigue (LCF) loading and vibratory one [1,2]. The failure induced by fretting fatigue has gradually become a prominent issue during long-time service, and in some cases micro slip at the edge of a contact zone can reduce life by as much as 40-60% [3].…”

Oil debris monitoring in misaligned spline couplings subjected to fretting wear

“…19,20 Wear phenomena in spline couplings involve interesting and unsolved problems (as a matter of fact, a robust spline couplings design criteria that properly take into account wear phenomena is still not available); so many research groups are working on this topic. [21][22][23] In order to better understand and identify fretting wear mechanism on spline couplings, an experimental investigation about debris production would be useful and interesting.…”