Jens Nielsen

Calibration of 2D and 3D Track Models for Simulation of Vehicle–track Interaction and Differential Settlement in Transition Zones Using Field Measurement Data

Development and Calibration of a Crossing Panel Model - Comparison of Beam and 3D Representations of the Crossing Rail

2024

Influence of Sleeper Base Area and Spacing on Long-Term Differential Settlement in a Railway Track Transition Zone

2024

Benchmark of calibrated 2D and 3D track models for simulation of differential settlement in a transition zone using field measurement data

On wayside detector measurement of wheel–rail impact loads induced by wheel flats – Data analysis, alarm levels and regulations

2024

Dynamic vehicle–track interaction and loading in a railway crossing panel–calibration of a structural track model to comprehensive field measurements

2024

Inverse wheel–rail contact force and crossing irregularity identification from measured sleeper accelerations – A model-based Green's function approach

2024

Dynamic vehicle–track interaction and structural loading in a crossing panel–calibration and assessment of a model with a 3D representation of the crossing rail

2024

Assessment of Structural Requirements for Crossing Panel Design using Dynamic Load Case Scenarios

2024

Innovative requirements and evaluation methods for slab track design

2024

Towards improved regulations and procedures for damaged wheels - Assessment of wheel impact load detectors

2024

A time-domain approach to predict sound radiation from track vibrations

2024

Machine Learning Models for Predicting Permanent Deformation in Railway Tracks

2024

Towards real-time condition monitoring of a transition zone in a railway structure using fibre Bragg grating sensors.

Model-Based Remote Health Monitoring of Ballast Conditions in Railway Crossing Panels

2023

Prediction of long-term differential track settlement in a transition zone using an iterative approach

2023

Out-of-round railway wheels and polygonisation

2023

Probability of rail break caused by out-of-round wheel loads

2023

Influence of railway wheel tread damage on wheel–rail impact loads and the durability of wheelsets

2023

Reconstruction of sleeper displacements from measured accelerations for model-based condition monitoring of railway crossing panels

2022

Trafikverkets excellensområde 10: Systemperspektiv på järnvägen – Enkätundersökning om buller och vibrationer från spårtrafik

2022

Railway wheel tread damage and axle bending stress – Instrumented wheelset measurements and numerical simulations

2022

Probability of instant rail break induced by wheel–rail impact loading using field test data

Long-term monitoring of settlements below a transition zone in a railway structure

2022

Condition Monitoring of Railway Crossing Geometry via Measured and Simulated Track Responses

Rail Acceleration Induced by Train Pass-by—Field Measurements and Validation of a Simulation Model

2022

Optimisation of slab track design considering dynamic train–track interaction and environmental impact

Prediction of Differential Track Settlement in Transition Zones Using a Non-Linear Track Model

SIMULATION-BASED EVALUATION OF THE PROBABILITY OF RAIL-BREAK DUE TO OUT-OF-ROUND WHEEL LOADS

Demonstration of a Digital Twin Framework for Model-Based Operational Condition Monitoring of Crossing Panels

2021

Wheel–rail impact loads and axle bending stress simulated for generic distributions and shapes of discrete wheel tread damage

2021

Calibration and validation of the dynamic response of two slab track models using data from a full-scale test rig

2021

On the influence of crossing angle on long-term rail damage evolution in railway crossings

Wheel–Rail Impact Loads, Noise and Vibration: A Review of Excitation Mechanisms, Prediction Methods and Mitigation Measures

2021

Long-term rail profile damage in a railway crossing: Field measurements and numerical simulations

Simulation of vertical dynamic vehicle–track interaction using a three-dimensional slab track model

Prediction of Long-Term Damage in Railway Crossings Accounting for Variability in Dynamic Traffic Loads

Advances in Dynamics of Vehicles on Roads and Tracks : Proceedings of the 26th Symposium of the International Association of Vehicle System Dynamics, IAVSD 2019, August 12-16, 2019, Gothenburg, Sweden

Prediction of Vertical Dynamic Vehicle–Track Interaction and Sleeper–Ballast Contact Pressure in a Railway Crossing

On tailored signal processing tools for operational condition monitoring of railway switches and crossings

Degradation of railway track geometry – Correlation between track stiffness gradient and differential settlement

Simulation of vertical dynamic vehicle–track interaction – Comparison of two- and three-dimensional models

2019

Digitalisation of condition monitoring data as input for fatigue evaluation of wheelsets

Simulation of wheel–rail impact load and sleeper–ballast contact pressure in railway crossings using a Green's function approach

2019

Wheel-rail impact loads and noise generated at railway crossings - Influence of vehicle speed and crossing dip angle

2019

Preface

Prediction of plastic deformation and wear in railway crossings – Comparing the performance of two rail steel grades

2019

Metamodelling of wheel–rail normal contact in railway crossings with elasto-plastic material behaviour

Multi-objective optimisation of transition zones between slab track and ballasted track using a genetic algorithm

Simulation of damage in railway crossings - a comparison of rail steel grades R350HT and rolled Mn13

Preface

2018

Simulation of vertical dynamic vehicle–track interaction using a two-dimensional slab track model

An iterative methodology for the prediction of dynamic vehicle–track interaction and long-term periodic rail wear

Railway track geometry degradation due to differential settlement of ballast/subgrade – Numerical prediction by an iterative procedure

Hybrid model for prediction of impact noise generated at railway crossings

Dynamic interaction between vehicle and slab track – Influence of track design parameters

Reproducibility of railway noise measurements—influence of weather and test site conditions

Contributions of longitudinal track unevenness and track stiffness variation to railway induced vibration

Metamodel for elasto-plastic wheel–rail contact with application to damage in a railway crossing

Multi-objective design optimisation of transition zones between different railway track forms

Simulation of vertical dynamic vehicle-track interaction in a railway crossing using Green's functions

Switch panel design based on simulation of accumulated rail damage in a railway turnout

Vertical dynamic vehicle-track interaction in a railway crossing predicted by moving Green's functions

The influence of corrugation on frictional stress at the rail-wheel interface

Hybrid model for prediction of impact noise generated at railway crossings

Numerical prediction of rail corrugation growth on curves

Three-dimensional modelling of differential railway track settlement using a cycle domain constitutive model

Allowable wheel loads, crack sizes and inspection intervals to prevent rail breaks

Rail corrugation growth on curves - measurements, modelling and mitigation

Dynamic vehicle-track interaction in switches and crossings and the influence of rail pad stiffness - field measurements and validation of a simulation model

Reducing train-induced ground-borne vibration by vehicle design and maintenance

A hybrid model for prediction of ground-borne vibration due to discrete wheel/rail irregularities

Simulation of material degradation in track switches

Switch panel design based on simulation of accumulated rail damage in a railway turnout

Reduction of Train Induced Ground Vibration by Vehicle Design

Ground-Borne Vibration Mitigation Measures for Turnouts: State-of-the-Art and Field Tests

Simulation of track settlement in railway turnouts

2014

The influence of contact modelling on simulated wheel/rail interaction due to wheel flats

2014

Simulation of rail roughness growth on small radius curves using a non-Hertzian and non-steady wheel–rail contact model

Inverse identification of wheel-rail contact forces based on observation of wheel disc strains: an evaluation of three numerical algorithms

Rail corrugation growth on curves - measurements, modelling and mitigation

Design Optimization of Switch Rails in Railway Turnouts

Track gauge optimisation of railway switches using a genetic algorithm

Ground vibration induced by railway traffic - The influence of vehicle parameters

Wheel-rail interaction and damage in switches and crossings

Dynamic train–track interaction at high vehicle speeds considering the inertial effects due to wheel rotation

Simulation of rail roughness growth on small radius curves using a non-Hertzian and non-steady wheel-rail contact model

High-Frequency Vertical Wheel-Rail Contact Forces at High Vehicle Speeds-The Influence of Wheel Rotation

The influence of contact modelling on simulated wheel/rail interaction due to wheel flats

Kinematic Gauge Optimization of Switches Using Genetic Algorithms

In situ performance of a ballasted railway track with under sleeper pads

Simulering av dynamisk tåg-spår interaktion i snäva kurvor

Track model validation for simulation of train–turnout dynamics

Track condition analyser: identification of rail rolling surface defects, likely to generate fatigue damage in wheels, using instrumented wheelset measurements

Simulation of dynamic vehicle-track interaction on small radius curves

Dynamic train-track interaction at high vehicle speeds-Modelling of wheelset dynamics and wheel rotation

Simulation of wheel-rail contact and damage in switches & crossings

Acceptance criterion for rail roughness level spectrum based on assessment of rolling contact fatigue and rolling noise

Track condition analyser – assessment of need for track maintenance based on instrumented wheelset measurements

DAMAGE IN SWITCHES AND CROSSINGS CONSIDERING STOCHASTIC SPREAD IN RAILWAY TRAFFIC PARAMETERS

High-frequency vertical wheel–rail contact forces at high vehicle speeds – the influence of wheel rotation

Geometry and stiffness optimization for switches and crossings, and simulation of material degradation

INNOTRACK Deliverable 3.1.6 -- Recommendation of, and scientific basis for, optimisation of switches & crossings - part 2. Paris:UIC

Monitoring of rail corrugation growth due to irregular wear on a railway metro curve

INNOTRACK Deliverable 3.1.5 -- Recommendation of, and scientific basis for, optimisation of switches & crossings - part 1. Paris:UIC

Simulation of wheel-rail contact and damage in switches & crossings

Out-of-round railway wheels

Alarm limits for wheel–rail impact loads – part 1: rail bending moments generated by wheel flats

INNOTRACK Deliverable 4.2.5 -- Improved model for the influence of vehicle conditions (wheel flats, speed, axle load) on the loading and subsequent deterioration of rails

Analysis of static fractures of rails due to wheel flats

INNOTRACK Deliverable 4.2.4 -- Improved model for loading and subsequent deterioration due to squats and corrugation

Acceptance criterion for rail roughness level spectrum based on assessment of rolling contact fatigue and rolling noise

Dynamic train–turnout interaction in an extended frequency range using a detailed model of track dynamics

INNOTRACK Deliverable 3.1.4 -- Summary of results from simulations and optimisation of switches. Paris: UIC

Simulation of wheel–rail contact and subsequent material degradation in switches & crossings

Monitoring of rail corrugation growth due to irregular wear on a railway metro curve

Monitoring of rail corrugation growth due to irregular wear on a railway metro curve

Alarm limits for wheel–rail impact loads – part 2: analysis of crack growth and fracture

Assessment of methods for calculating contact pressure in wheel-rail/switch contact

Dynamic interaction between train and turnout - full-scale field test and validation of simulation models

Stochastic analysis of dynamic interaction between train and turnout

High-frequency vertical wheel-rail contact forces - validation of a prediction model by field testing

Rail roughness level assessment based on high-frequency wheel-rail contact force measurements

A Time Domain Model for Wheel/Rail Interaction Aiming to Include Non-linear Contact Stiffness and Tangential Friction

Under Sleeper Pads - Influence on Dynamic Train-Track Interaction

Dynamic interaction between train and railway turnout – full-scale field test and validation of simulation models

Subsurface initiated rolling contact fatigue of railway wheels as generated by rail corrugation

Rail Corrugation Growth - Influence of Powered Wheelsets with Wheel Tread Irregularities

Rail roughness level assessment based on high-frequency wheel–rail contact force measurements

Larmgräns för hjulskadedetektorer – En utredning av risk för rälbrott på Malmbanan

2007

A time domain model for the wheel/rail interaction aiming to include non-linear contact stiffness and tangential friction

INNOTRACK Deliverable 4.2.1 -- Simplified relation for the influence of rail/joint degradation on operational loads and subsequent deterioration

Railway vehicle/track interaction analysis using a modal substructuring approach

Assessment of methods for calculating contact pressure in wheel–rail/switch contact

Under sleeper pads – influence on dynamic train–track interaction

Simulation of dynamic interaction between train and railway turnout

Multi-disciplinary optimization of railway wheels

Prediction of dynamic train-track interaction and subsequent material deterioration in the presence of insulated rail joints

High-frequency vertical wheel–rail contact forces – validation of a prediction model by field testing

Influence of railway wheel flat impact on crack growth in rails

Influence of short-pitch wheel/rail corrugation on rolling contact fatigue of railway wheels

Two-material rail development: field test results regarding rolling contact fatigue and squeal behaviour

Out-of-Round Railway Wheels - Influence of Powered Wheelsets with Tread Braking on Rail Corrugation Growth

Fatigue evaluation of surface coated railway rails using shakedown theory, finite element calculations, and lab and field trials

Prediction of dynamic train–track interaction and subsequent material deterioration in the presence of insulated rail joints

Simulation of dynamic train-track interaction with state-dependent track properties

Multi-disciplinary optimization of railway wheels

Integrated analysis of dynamic train–track interaction and rolling contact fatigue

Integrating rolling contact fatigue analysis with simulation of dynamic train–track interaction

Two-material rail development: Field test results regarding rolling contact fatigue and squeal behaviour

Two-material rail for RCF and noise control

Out-of-Round Railway Wheels - Wheel-Rail Contact Forces and Track Response Derived from Field Tests and Numerical Simulations

Researchers on the track of wheel-rail interaction

Prevention of RCF damage in curved track through development of the INFRA-STAR two-material rail

Train-Track Interaction and Mechanisms of Irregular Wear on Wheel and Rail Surfaces

Two-material rail development to prevent rolling contact fatigue and to reduce noise levels in curved rail track

Railway Wheel Out-of-Roundness - Influence on Wheel/Rail Contact Forces and Track Response

Out-of-Round Railway Wheels - a Literature Survey

Out-of-Round Railway Wheels - A Literature Survey

Train---Track Interaction. Coupling of Moving and Stationary Dynamic Systems: Theoretical and Experimental Analysis of Railway Structures Considering Wheel and Track Imperfections