• A systematic study with new insights into wheel-rail flange squeal is carried out. Well-controlled in-situ experiments are conducted for measurements. An integrated transient model proposed and validated analysis. The intakes 3D scanning irregularity data reappearance. Mechanism of studied by discussion on identified critical factors. Wheel-rail noise during train turning has been a tricky pr...

In this paper, effect of uncertainty fastening system properties on the wheel/rail dynamic force (WRDF) was investigated. For purpose, two deterministic and epistemic models vehicle/track interaction were developed, using finite element method. Validity results obtained from shown through comparison between model those field tests. The effects WRDF in different axle loads, vehicle speeds, rail ...

Continuous Welded Rails (CWR) are a key infrastructure element in the safety and efficiency of rail transportation. Their correct exploitation (operational) requires surveying diagnostic monitoring based not only on results displacement measurements, but also geometric parameters track horizontal (H) vertical (V) planes. Many researchers have proposed different approaches for CWR. However, they...

This article presents a mathematical model aimed at predicting wheel–rail contact vibration force arising from wheel profile irregularities. Prediction of vibrations caused by a passing train is a basic factor in environmental impact studies related to planning new railway lines. The prediction model is useful during the development of a project as it facilitates selection of the most suitable ...

In this study, a wheel-rail transient rolling contact model capable of accounting for the nonlinear displacement-force properties hanging sleepers is proposed. The sleeper status affected by rail irregularities an input analysis behavior and related degradation in terms plastic deformation fatigue. results indicate that severity significantly geometric characteristics relative position with res...

A subway train-steel spring floating slab track-tunnel coupling dynamic model, considering short and middle-long wavelength random track irregularities, and longitudinal connection between adjacent slabs of steel spring floating slab track, was developed. And the influence of slab length on dynamic characteristics of the system under different track conditions and train speeds are theoretically...

The environmental effects of ground-borne vibrations generated due to localised railway defects is a growing concern in urban areas. Frequency domain modelling approaches are well suited for predicting vibration levels on standard railway lines due to track periodicity. However, when considering individual, non-periodic, localised defects (e.g. a rail joint), frequency domain modelling becomes ...