A continuum damage mechanics approach for fretting fatigue under out of phase loading

Bhatti, Nadeem Ali; Pereira, K.; Wahab, Magd Abdel

doi:10.1016/j.triboint.2017.08.009

Cited by 57 publications

(19 citation statements)

References 45 publications

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“…The reduction in fatigue life can reach up to 50% [3]. The failure process is generally characterized by two phases, crack nucleation [4,5] and crack propagation [6,7]. Researchers are concerned with contact stresses because it directly affects the initiation of cracks [8].…”

Section: Introductionmentioning

confidence: 99%

Numerical Modeling of the Effect of Randomly Distributed Inclusions on Fretting Fatigue-Induced Stress in Metals

Deng

Bhatti

Yin

et al. 2018

Metals

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The analysis of fretting fatigue plays an important role in many engineering fields. The presence of heterogeneity may affect the performance of a machine or a structure, including its lifetime and stability. In this paper, the effect of randomly distributed micro inclusions on the fretting fatigue behaviour of heterogeneous materials is analysed using the finite element method (FEM) for different sizes, shape and properties of inclusions. The effect of micro inclusions on macroscopic material properties is also considered by representative volume element (RVE). It is shown that the influence of micro inclusions on macroscopic material properties cannot be ignored, and the shape and size of the inclusions have less effect on the macroscopic material properties as compared to the material properties of inclusion and volume ratio. In addition, various parameters of inclusions have little effect on the peak tensile stress, which remains almost the same as homogeneous material. Peak shear stress occurs at many places inside the specimen, which can result in multiple cracking points inside the specimen, as well as at the contact surface. Moreover, the stress band formed by the stress coupling between adjacent inclusions may have an important influence on the direction of crack growth.

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Section: Introductionmentioning

confidence: 99%

Numerical Modeling of the Effect of Randomly Distributed Inclusions on Fretting Fatigue-Induced Stress in Metals

Deng

Bhatti

Yin

et al. 2018

Metals

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“…Considering that the fretting is a multiaxial fatigue phenomenon, the critical plane Smith–Watson–Topper (SWT) model [ 24 ] is adopted to predict the fretting fatigue crack initiation behavior. The model is based on the experimental observations that the fatigue crack occurs at a specified plane, and the fatigue life is controlled by the stress and strain amplitude on the specified plane.…”

Section: Simulation Modelmentioning

confidence: 99%

Effects of Shot Peening on Fretting Fatigue Crack Initiation Behavior

Liu

Zuo

et al. 2019

Materials

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This study analyzes the effects of shot peening on the crack initiation behavior under fretting loading by using a numerical method. The residual stress relaxation and the contact stress evolution are both considered. The crack initiation life is predicted by the critical plane Smith–Watson–Topper (SWT) model. Considering that the fretting contact region has a high stress gradient along the depth direction, the process volume approach is adopted to calculate the SWT parameters. The results show that the remaining residual stress after relaxation strongly affects crack initiation life. The remaining residual stress decreases with the increase of fatigue loading, and the effect of shot peening on the improvement of crack initiation life is more obvious under smaller fatigue loading. Furthermore, under smaller fatigue loading, the crack initiation life of specimens with high shot peening intensity is longer than that of specimens with low shot peening intensity. However, the opposite phenomenon appears when the fatigue loading is large enough.

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“…In the finite element simulation aspect, it should be noticed that the contact zone is in the state of high stress concentration, high stress gradient, and multiaxial stress, which brings challenges to the finite element simulation. Several researchers have done some explorations about this . Arnab et al used linear elastic fracture mechanics (LEFM) based finite element simulation to predict the propagation behavior of subsurface crack .…”

Section: Introductionmentioning

confidence: 99%

“…Several researchers have done some explorations about this. [24][25][26][27][28] Arnab et al used linear elastic fracture mechanics (LEFM) based finite element simulation to predict the propagation behavior of subsurface crack. 20,29 However, there has been little work done on the simulation of fretting fatigue subsurface crack formation of NBSX.…”

Section: Introductionmentioning

confidence: 99%

Subsurface crack formation and propagation of fretting fatigue in Ni‐based single‐crystal superalloys

Han

Sheng

Qiu

et al. 2019

Fatigue Fract Eng Mat Struct

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The fretting fatigue crack formation and propagation behaviors of Ni‐based single‐crystal (NBSX) superalloys are investigated in this paper. Subsurface crack formation process is revealed by in situ fretting fatigue experiment. The crack is observed to form on subsurface area, then propagates to the contact surface. Inclusions in materials are found to have obvious effects on crack propagation, and slip lines are closely related to the crack propagation direction. Crystal plastic finite element method (CPFEM) simulation is used to simulate crack formation position. The accumulative plastic strain peaks at the edge of contact zone and the subsurface area. The results show that the CPFEM simulation and in situ observation achieve good agreements.

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A continuum damage mechanics approach for fretting fatigue under out of phase loading

Cited by 57 publications

References 45 publications

Numerical Modeling of the Effect of Randomly Distributed Inclusions on Fretting Fatigue-Induced Stress in Metals

Numerical Modeling of the Effect of Randomly Distributed Inclusions on Fretting Fatigue-Induced Stress in Metals

Effects of Shot Peening on Fretting Fatigue Crack Initiation Behavior

Subsurface crack formation and propagation of fretting fatigue in Ni‐based single‐crystal superalloys

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