Rolling Contact Fatigue Life of Rail for Different Slip Conditions

A new solution method for wheel/rail rolling contact

To solve the problem of wheel/rail rolling contact of nonlinear steady-state curving, a three-dimensional transient finite element (FE) model is developed by the explicit software ANSYS/LS-DYNA. To improve the solving speed and efficiency, an explicit-explicit order solution method is put forward based on analysis of the features of implicit and explicit algorithm. The solution method was first...

Rolling Contact Fatigue in Ultra High Vacuum

Analysis of Surface Crack Growth under Rolling Contact Fatigue

Understanding the fatigue crack growth phenomenon in railheads requires a study of driving forces such as the crack tip opening and sliding displacements, under repeated rolling contact. Finite element simulations, allowing elastic-plastic deformation, and mixed-mode crack growth laws were utilized to demonstrate that the fatigue crack growth rates display a minimum after a finite amount of cra...

Rolling contact fatigue of surface coatings—a review

The aim of this review is to survey the state of the art relating to the rolling contact fatigue (RCF) investigation of various overlay coatings and also, to ascertain the influence of design parameters such as the type of deposition process, coating material and thickness on the RCF performance. Rolling contact fatigue is a significant factor in the failure of components in rolling/sliding con...

Improved Method of Rolling Bearing Fatigue Life Prediction Under Edge Loading Conditions

More than half a century has passed since Lundberg and Palmgren (referred to as LP in the following) established a theory on the life of rolling bearings 1) 2), and problems with the theory such as its lack of capability of considering shear force (tangential force) on the surface caused by slip or the initial or residual stress due to fit have been pointed out, with correction to these problem...