A finite element and fatigue threshold study of shelling in heavy haul rails

Hellier, A.K.; McGirr, M.B.; Corderoy, Djh

doi:10.1016/0043-1648(91)90021-l

Cited by 16 publications

(10 citation statements)

References 8 publications

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“…65,66 The reason for that is a friction-induced shielding of the precrack leading to a decrease of the effective crack driving force ΔK IIeff . In the rail steel, Hellier et al 13 assessed the remote crack growth threshold as ΔK II,th ≈ 9 MPa m 1/2 (R = 0). It should be noted, however, that the shear-mode crack growth was associated with many mode I branches along the crack paths that contributed to deceleration and final bifurcation of mode II cracks.…”

Section: Mode IImentioning

confidence: 99%

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Near‐threshold behaviour of shear‐mode fatigue cracks in metallic materials

Pokluda

Pippan

Vojtek

et al. 2013

Fatigue Fract Eng Mat Struct

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This review paper presents a brief state‐of‐the art of the research on long fatigue shear‐mode cracks and describes some recent results on effective crack growth thresholds and mode I branching conditions achieved by the authors for ARMCO iron, titanium with two different microstructures, nickel and stainless steel. A special technique for preparation of fatigue precracks enabled us to substantially suppress the crack closure (friction) effects at the beginning of the experiment, and the measured threshold values could be considered to be very close to the effective ones. In all investigated materials, the effective thresholds under the remote mode II loading were found to be about 1.7 times lower than those under the remote mode III loading. Effective thresholds under mode II loading of investigated materials were found to follow a simple formula assembled by the shear modulus G, the magnitude of Burgers vector b and a goniometrical function nα of the mean deflection angle that depends on the number of available crystallographic slip systems. These quantities determine the intrinsic material resistance to mode II crack propagation at the threshold. A simple criterion for mode I branching in terms of effective threshold values well reflects a transition from the shear‐mode to the opening‐mode controlled crack propagation at the threshold. The associated transition deflection angle of 40° is a material independent constant.

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Section: Mode IImentioning

confidence: 99%

“…[11][12][13][14][15][16][17] Moreover, the negative influence of superimposed out-of-phase cyclic compressive loading on mode III crack growth was observed and discussed in terms of smoothing the crack wake asperities and inducing tensile residual stresses. In fact, the systematic research in this field started only after 1970.…”

Section: Introductionmentioning

confidence: 99%

Near‐threshold behaviour of shear‐mode fatigue cracks in metallic materials

Pokluda

Pippan

Vojtek

et al. 2013

Fatigue Fract Eng Mat Struct

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“…As mode II propagation is concerned, no much literature deals with this topic, because it is not easy to control pure mode II propagation in laboratory condition, due its tendency to evolve in mode I. Mode II propagation thresholds and rates have been experimentally determined only for a few materials, with special laboratory equipments 16,19–22 . However, Biner 23 and Liu and Mahadevan 24 made some experiment of mixed mode propagation, even in prevalent mode II; they also elaborated some models for calculating an equivalent SIF, depending on both K I and K II .…”

Section: Introductionmentioning

confidence: 99%

“…For a quantitative approach to this problem, it is evident that it is crucial to find an efficient method for calculating the applied mode II SIFs at subsurface crack tips, because this is the basic parameter for assessing both propagation threshold and growth rate. In the literature, an analytical solution is given only for a crack in an infinite body, known as the Griffith crack; other few solutions 19,20,26 have been obtained by numerical methods, such as body forces, boundary element (BEM) and FEM. The main drawback of these methods is that the model construction is usually complex and time consuming; therefore, in a crack growth process, only a few load cycles can be simulated in a reasonable time, as each step requires a re‐construction of the model.…”

Section: Introductionmentioning

confidence: 99%

A numerical approach to subsurface crack propagation assessment in rolling contact

Mazzù

2013

Fatigue Fract Eng Mat Struct

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Subsurface crack mode II propagation parallel to the contact surface is a damage mechanism leading to dramatic failure in many components subjected to cyclic loading. A weight function (WF) was elaborated for calculating the applied mode II stress intensity factor (SIF) of a crack in a two‐dimensional half‐space in plane strain condition, for crack completely closed and frictionless contact between the crack faces. With respect to other methods, the WF allows faster SIF calculation, thus being suitable for simulation of many repeated load cycles and fatigue crack propagation. The WF was applied for simulating a case of rolling contact experiments found in the literature, and good agreement between experimental and numerical results was obtained, showing the effectiveness of the WF method in damage tolerant design.

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“…An interesting investigation is the finite element analysis of shelling in heavy haul rails by Hellier et al [3]. An interesting investigation is the finite element analysis of shelling in heavy haul rails by Hellier et al [3].…”

Section: 3 Numerical Results For Shell Analysesmentioning

confidence: 99%

Analysis of fatigue phenomena in railway rails and wheels

1994

Handbook of Fatigue Crack Propagation in Metallic Structures

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A finite element and fatigue threshold study of shelling in heavy haul rails

Cited by 16 publications

References 8 publications

Near‐threshold behaviour of shear‐mode fatigue cracks in metallic materials

Near‐threshold behaviour of shear‐mode fatigue cracks in metallic materials

A numerical approach to subsurface crack propagation assessment in rolling contact

Analysis of fatigue phenomena in railway rails and wheels

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