The role of macroscopic plastic deformation in fretting fatigue life predictions

The role of plastic anisotropy deformation in fretting wear predictions

“…The plastic strain region develops near the trailing edge, and it increases with the increasing of cyclic number, the region near the leading edge develops little plastic strain comparing with the region of trailing edge. This simulation result is in agreement with experimental results [21].…”

“…7 gives the contour of effective plastic ratcheting strain near the trailing edge after 11 cycles. The effective plastic ratcheting strain distributions penetrate more deeply into the subsurface similar to the experimental observation [21]. In the subsurface field below contact, the model calculations predict inhomogeneous plastic strain distributions with deeper penetration of regions of localized plastic shear strain.…”

Effect of frequency on multi-axial fretting fatigue damage behavior of Al-Zn-Mg alloys

“…(2) The low frequency provides more extended time for crack propagation [9]. (3) Difference in frequency of the specimen will result in difference of friction coefficient on the specimen's surface which can lead to change of wear degree and fretting area of contact area of the specimen's surface, so as to change crack initiation and propagation, and further multi-axial fretting fatigue lives of Al-Zn-Mg alloy [10]. The multi-axial fatigue and fretting fatigue lives of Al-Zn-Mg alloy at the same frequency are shown in Table 1.…”

Cyclic plastic behavior of dovetail under fretting load

“…Hammouda [14] obtained the cyclic shear stress-strain curve of the dovetail assemblies and the failure mechanism of fretting fatigue was further investigated based on their analysis. Ambrico [15] evaluated the effect of ratcheting on plastic strain amplitudes under fretting load and proposed a life prediction equation, similar study was conducted by Lu [16].…”