Elasto-plastic finite-element analysis of 2-D rolling-plus-sliding contact with temperature-dependent bearing steel material properties

Gupta, Vikas; Bastias, P.C.; Hahn, G. T.; Rubin, Carol

doi:10.1016/0043-1648(93)90306-7

Cited by 27 publications

(15 citation statements)

References 9 publications

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“…The bearings of offshore wind turbines can suffer hydrogen-assisted rolling-contact fatigue (HA-RCF) due to: (i) the use of long-life lubricants with certain additives to extend the turbine maintenance intervals, what contributes to lubricant decomposition and hydrogen generation; (ii) the increased likelihood of moisture entering the bearing; (iii) the salty environment increases the corrosion of materials and hence the probability of hydrogen penetration. Three important aspects linked with bearing failures are being extensively researched: (i) rolling contact fatigue (RCF) [2][3][4][5], (ii) influence of carbide particles on fatigue life [6,7], and (iii) local microplastic strain accumulation via ratcheting [8][9][10]. However, there is no literature related with bearing failures in harsh environment.…”

mentioning

confidence: 98%

Numerical analysis of hydrogen-assisted rolling-contact fatigue of wind turbine bearings

Toribio

Lorenzo

Vergara

et al. 2014

Frattura Ed Integrità Strutturale

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Offshore wind parks at locations further from the shore often involve serious difficulties, e.g. the maintenance. The bearings of offshore wind turbines are prone to suffer hydrogen-assisted rolling-contact fatigue (HA-RCF). Three important aspects linked with bearing failures are being extensively researched: (i) rolling contact fatigue (RCF), (ii) influence of carbide particles on fatigue life, and (iii) local microplastic strain accumulation via ratcheting. However, there is no reference related to bearing failure in harsh environment. This way, this paper helps to gain a better understanding of the influence of hydrogen on the service life of offshore wind turbine bearings through a numerical study. So, the widely used RCF ball-on-rod test was simulated by finite element method in order to obtain the stress-strain state inside the bearings during life in service and, from this, to elucidate the potential places where the hydrogen could be more harmful and, therefore, where the bearing material should be improved.

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mentioning

confidence: 98%

Numerical analysis of hydrogen-assisted rolling-contact fatigue of wind turbine bearings

Toribio

Lorenzo

Vergara

et al. 2014

Frattura Ed Integrità Strutturale

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“…A new expression of the temperature rise parameter T / f is introduced to describe fluctuations in the thermal parameters. The finite element method (FEM) has been widely used to investigate the contact temperature of the deformation peak 8,9,10,11. Ye and Komvopoulos 10 show that frictional shear traction and thermal loading promote stress intensification and plasticity, especially in the case of relatively thin layers exhibiting low thermal conductivity.…”

Section: Introductionmentioning

confidence: 99%

Study of temperature distribution of sliding block with asperity surface

Chern

Horng

Chen

2011

Surface & Interface Analysis

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In this study, a numerical thermal model is developed for sliding block contact under various loads, sliding velocities and surface roughness. The temperature distributions are shown for perfectly insulated thermal conditions along noncontact surfaces. For a particular five-peaks contact model, the maximum temperature at the central peak is slightly lhigher than the others. The temperature profile decreases as the distance to the symmetry axis increases, and then decreases dramatically at the noncontact area. It is clear to see that the maximum temperature locates at the symmetry central peak of the asperity contact area instead of the leading head of the smooth surface. The maximum temperature rise parameter increases as the pressure, sliding velocity and asperity roughness increased or conductivity decreased. This phenomenon becomes obvious for cases at high pressure, velocity and roughness and low conductivity. Particularly, the influence of roughness is not significant for low velocity. Similar results are found for the maximum temperature rise parameter difference between peaks or peaks/valleys. The simulation results of this asperity surface sliding block contact model are able to provide essential information for the components of microelectro -mechanical systems (MEMS) and biochemical reaction mechanism.

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“…The material properties of the rail and wheel are assumed to be same and are as follow; Young's modulus 205MPa, yielding strength 500MPa, friction coefficient 0.3 tangent modulus 4000MPa, and linear kinematics hardening model is used. In this task the rail length is considered to be 700 mm [25]. The initial contact point is assumed to occur at the railhead centre and wheel tread centre.…”

Section: Numerical Examplementioning

confidence: 99%

“…The coulomb friction coefficient is assumed to be 0.3. The material properties of the wheel and rail are considered to be bilinear kinematic hardening in ANSYS [25]. After that quasi-static analysis is performed and the results for each step are stored.…”

Section: Finite Element Modelling Of Wheel / Rail Contactmentioning

confidence: 99%

Fatigue crack initiation life prediction of railroad

Tehrani¹,

Saket²

2009

J. Phys.: Conf. Ser.

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Abstract. Study of multiaxial high-cycle fatigue initiation life prediction for railroad is done in this paper. Using ANSYS 11.0 software three dimensional elasto-plastic finite element model of rail/wheel contact is constructed and fine mesh technique in contact region is used to achieve both computational efficiency and accuracy. Stress analysis is performed and fatigue damage in railroad is evaluated numerically using multiaxial fatigue crack initiation model. Using the stress history during one loading cycle and fatigue damage model, the effects of vertical loading, material hardness material fatigue properties and wheel/rail contact situation on fatigue crack initiation life are investigated.

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Elasto-plastic finite-element analysis of 2-D rolling-plus-sliding contact with temperature-dependent bearing steel material properties

Cited by 27 publications

References 9 publications

Numerical analysis of hydrogen-assisted rolling-contact fatigue of wind turbine bearings

Numerical analysis of hydrogen-assisted rolling-contact fatigue of wind turbine bearings

Study of temperature distribution of sliding block with asperity surface

Fatigue crack initiation life prediction of railroad

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