Chalmers Research: Jens Nielsen

2018

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

Andreas Carlberger, Peter Torstensson, Jens Nielsen et al

Proceedings of the Institution of Mechanical Engineers, Part F: Journal of Rail and Rapid Transit. Vol. 0 (0), p. 1-13

Artikel i vetenskaplig tidskrift

2018

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

Emil Aggestam, Jens Nielsen, Rikard Bolmsvik

Vehicle System Dynamics

Artikel i vetenskaplig tidskrift

2018

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

Rostyslav Skrypnyk, Jens Nielsen, Björn Pålsson et al

Engineering with Computers

Artikel i vetenskaplig tidskrift

2017

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

Xin Li, Peter T Torstensson, Jens Nielsen

Journal of Sound and Vibration. Vol. 410, p. 318-329

Artikel i vetenskaplig tidskrift

2017

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

Emil Aggestam, Jens Nielsen

Dynamics of Vehicles on Roads and Tracks: Proceedings of the 25th International Symposium on Dynamics of Vehicles on Roads and Tracks (IAVSD 2017), 14-18 August 2017, Rockhampton, Queensland, Australia

Konferensbidrag (offentliggjort, men ej förlagsutgivet)

2016

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

Roger Lundén, Jens Nielsen, Anders Ekberg

Civil-Comp Proceedings. Vol. 110

Artikel i vetenskaplig tidskrift

2016

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

Xin Li, Magnus Ekh, Jens Nielsen

International Journal for Numerical and Analytical Methods in Geomechanics. Vol. 40 (12), p. 1758-1770

Artikel i vetenskaplig tidskrift

2016

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

Jens Nielsen, Björn Pålsson, Peter Torstensson

Wear. Vol. 366-367 (SI), p. 241-248

Artikel i vetenskaplig tidskrift

2016

Hybrid model for prediction of impact noise generated at railway crossings

Peter Torstensson, Giacomo Squicciarini, Matthias Krüger et al

Proceedings of the 12h International Workshop on Railway Noise (IWRN12), Terrigal, Australia, September 12-16 (2016), p. 539 - 545

Paper i proceeding

2016

Numerical prediction of rail corrugation growth on curves

Andreas Carlberger, Peter T Torstensson, Anders Frid et al

Proceedings of the 19h Nordic Seminar on Railway Technology, September 14 - 15, Luleå, Sweden (2016)

Konferensbidrag (offentliggjort, men ej förlagsutgivet)

2015

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

R. Muller, Jens Nielsen, B. Nelain et al

Notes on Numerical Fluid Mechanics and Multidisciplinary Design. Vol. 126, p. 547-554

Paper i proceeding

2015

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

Xin Li, Peter Torstensson, Jens Nielsen

24th Symposium of the International Association for Vehicle System Dynamics, IAVSD 2015; Graz; Austria; 17 August 2015 through 21 August 2015, p. 1319-1327

Paper i proceeding

2015

Rail corrugation growth on curves - measurements, modelling and mitigation

Peter Torstensson, Jens Nielsen

Notes on Numerical Fluid Mechanics and Multidisciplinary Design. Vol. 126, p. 659-666

Artikel i vetenskaplig tidskrift

2015

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

Jens Nielsen, Björn Pålsson, Peter T Torstensson

Proceedings of the 10th International International Conference on Contact Mechanics and Wear of Rail/Wheel Systems, Colorado Springs, USA, August-September 2015

Paper i proceeding

2015

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

Jens Nielsen, A. Mirza, S. Cervello et al

International Journal of Rail Transportation. Vol. 3 (1), p. 17-39

Artikel i vetenskaplig tidskrift

2015

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

Björn Pålsson, Jens Nielsen

Vehicle System Dynamics. Vol. 53 (6), p. 734-755

Artikel i vetenskaplig tidskrift

2015

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

Jens Nielsen, G. Lombaert, S. Francois

Journal of Sound and Vibration. Vol. 345, p. 103-120

Artikel i vetenskaplig tidskrift

2015

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

Anders Ekberg, Elena Kabo, Jens Nielsen

Proceedings of the 11th International Heavy Haul Association Conference (IHHA 2015)

Paper i proceeding

2015

Simulation of material degradation in track switches

Rostyslav Skrypnyk, Jim Brouzoulis, Magnus Ekh et al

Proceedings of the twenty eighth nordic seminar on computational mechanics, p. 157-159

Konferensbidrag (offentliggjort, men ej förlagsutgivet)

2015

Reduction of Train Induced Ground Vibration by Vehicle Design

A. Mirza, A. Frid, Jens Nielsen

Notes on Numerical Fluid Mechanics and Multidisciplinary Design. Vol. 126, p. 523-530

Paper i proceeding

2014

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

Astrid Pieringer, Wolfgang Kropp, Jens Nielsen

Wear. Vol. 314 (1-2), p. 273-281

Artikel i vetenskaplig tidskrift

2014

Simulation of track settlement in railway turnouts

Xin Li, Jens Nielsen, Björn Pålsson

Vehicle System Dynamics. Vol. 52 (SUPPL. 1), p. 421-439

Artikel i vetenskaplig tidskrift

2014

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

Peter T Torstensson, Astrid Pieringer, Jens Nielsen

Wear. Vol. 314 (1-2), p. 241-253

Artikel i vetenskaplig tidskrift

2013

Rail corrugation growth on curves - measurements, modelling and mitigation

Peter Torstensson, Jens Nielsen

Proceedings of the 11th International Workshop on Railway Noise (IWRN11), Uddevalla, Sweden, September 9-13 (2013). Vol. 2, p. 727-734

Paper i proceeding

2013

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

Hamed Ronasi, Jens Nielsen

Vehicle System Dynamics. Vol. 51 (1), p. 74-90

Artikel i vetenskaplig tidskrift

2012

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

Peter Torstensson, Astrid Pieringer, Jens Nielsen

9th International Conference on Contact Mechanics and Wear of Rail/Wheel Systems, CM 2012; Chengdu; China; 27 August 2012 through 30 August 2012, p. 223-230

Paper i proceeding

2012

Design Optimization of Switch Rails in Railway Turnouts

Björn Pålsson, Jens Nielsen

Proceedings of the Contact Mechanics 2012 conference in Chengdu, China.

Konferensbidrag (offentliggjort, men ej förlagsutgivet)

2012

Wheel-rail interaction and damage in switches and crossings

Björn Pålsson, Jens Nielsen

Vehicle System Dynamics. Vol. 50 (1), p. 43-58

Artikel i vetenskaplig tidskrift

2012

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

Peter T Torstensson, Jens Nielsen, Luis Baeza

Journal of Sound and Vibration. Vol. 330, p. 5309-5321

Artikel i vetenskaplig tidskrift

2012

Track gauge optimisation of railway switches using a genetic algorithm

Björn Pålsson, Jens Nielsen

Vehicle System Dynamics. Vol. 50 (SUPPL. 1), p. 365-387

Artikel i vetenskaplig tidskrift

2012

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

Astrid Pieringer, Wolfgang Kropp, Jens Nielsen

Proceedings of the 9th International Conference on Contact Mechanics and Wear of Rail/Wheel Systems (CM2012), Chengdu, China, August 27-30, 2012, p. 406-415

Paper i proceeding

2012

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

Peter Torstensson, Jens Nielsen, Luis Baeza

Notes on Numerical Fluid Mechanics and Multidisciplinary Design. Vol. 118, p. 43-50

Paper i proceeding

2011

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

Jens Nielsen, Anders Ekberg

Wear. Vol. 271 (1-2), p. 319-327

Artikel i vetenskaplig tidskrift

2011

Kinematic Gauge Optimization of Switches Using Genetic Algorithms

Björn Pålsson, Jens Nielsen

International Symposium on Dynamics of Vehicles on Roads and Tracks, Manchester, August 2011

Konferensbidrag (offentliggjort, men ej förlagsutgivet)

2011

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

P. Schneider, Rikard Bolmsvik, Jens Nielsen

Proceedings of the Institution of Mechanical Engineers, Part F: Journal of Rail and Rapid Transit. Vol. 225 (F3), p. 299-309

Artikel i vetenskaplig tidskrift

2011

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

Peter T Torstensson, Jens Nielsen, Luis Baeza

Journal of Sound and Vibration. Vol. 330 (22), p. 5309-5321

Artikel i vetenskaplig tidskrift

2011

Simulation of dynamic vehicle-track interaction on small radius curves

Peter Torstensson, Jens Nielsen

Vehicle System Dynamics. Vol. 49 (11), p. 1711-1732

Artikel i vetenskaplig tidskrift

2011

Simulering av dynamisk tåg-spår interaktion i snäva kurvor

Peter T Torstensson, Jens Nielsen

Svenska Mekanikdagar 13-15 juni 2011 Chalmers Göteborg

Konferensbidrag (offentliggjort, men ej förlagsutgivet)

2011

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

Anders Johansson, Björn Pålsson, Magnus Ekh et al

Wear. Vol. 271 (1-2), p. 472-481

Artikel i vetenskaplig tidskrift

2011

Track model validation for simulation of train–turnout dynamics

Björn Pålsson, Jens Nielsen

Proceedings International Heavy Haul Conference, Calgary, June 2011

Poster (konferens)

2011

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

Per Gullers, Paul Dreik, Jens Nielsen et al

Proceedings of the Institution of Mechanical Engineers, Part F: Journal of Rail and Rapid Transit. Vol. 225 (1), p. 1-13

Artikel i vetenskaplig tidskrift

2010

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

Per Gullers, Paul Sundvall, Jens Nielsen et al

Proceedings 16th International Wheelset Congress, p. 12 pp-

Paper i proceeding

2010

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

Björn Pålsson, Jens Nielsen

Proceedings of RASD 2010 - 10th International Conference on Recent Advances in Structural Dynamics, Southampton, England, July 12-14 2010

Paper i proceeding

2010

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

Jens Nielsen, Martin Schilke, Johan Ahlström et al

Rapport

2009

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

Jens Nielsen, Elias Kassa, Dirk Nicklisch et al

Rapport

2009

Out-of-round railway wheels

Jens Nielsen

Wheel/Rail Interface Handbook (editors R Lewis and U Olofsson), Woodhead Publishing, Cambridge (UK), p. 245-279

Kapitel i bok

2009

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

Francis Franklin, Jens Nielsen, Elena Kabo et al

Rapport

2009

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

Jens Nielsen, Elena Kabo, Anders Ekberg

Rapport

2007

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

Anders Ekberg, Johan Sandström, Elena Kabo et al

Rapport

2007

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

Anders Ekberg, Elena Kabo, Jens Nielsen et al

International Journal of Solids and Structures. Vol. 44, p. 7975-7987

Artikel i vetenskaplig tidskrift

2007

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

Jens Nielsen

Proceedings of the 9th International Workshop on Railway Noise (IWRN9), Munich, Germany, p. 6-

Paper i proceeding

2007

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

Anders Johansson, Jens Nielsen

Wear. Vol. 262 (11-12), p. 1296-1307

Artikel i vetenskaplig tidskrift

2007

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

Astrid Pieringer, Wolfgang Kropp, Jens Nielsen

Proceedings of the 9th International Workshop on Railway Noise (IWRN9),Munich, Germany, 2007 (published on CD)

Paper i proceeding

2006

Railway vehicle/track interaction analysis using a modal substructuring approach

Luis Baeza, A Roda, Jens Nielsen

Journal of Sound and Vibration. Vol. 293 (1-2), p. 112-124

Artikel i vetenskaplig tidskrift

2006

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

Jens Nielsen

Proceedings 7th International Conference on Contact Mechanics and Wear of Rail/Wheel Systems (CM2006), Brisbane, Australia, p. 41-48

Paper i proceeding

2006

Simulation of dynamic interaction between train and railway turnout

Elias Kassa, Clas Andersson, Jens Nielsen

Vehicle System Dynamics. Vol. 44 (3), p. 247-258

Artikel i vetenskaplig tidskrift

2006

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

Martina Wiest, Elias Kassa, Werner Daves et al

Proceedings 7th International Conference on Contact Mechanics and Wear of Rail/Wheel Systems (CM2006), Brisbane, Australia, p. 501-508

Paper i proceeding

2006

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

Elena Kabo, Jens Nielsen, Anders Ekberg

Vehicle System Dynamics. Vol. 44 (S1), p. 718 - 729

Artikel i vetenskaplig tidskrift

2006

Under sleeper pads – influence on dynamic train–track interaction

Anders Johansson, Jens Nielsen, Rikard Bolmsvik et al

Proceedings 7th International Conference on Contact Mechanics and Wear of Rail/Wheel Systems (CM2006), Brisbane, Australia, p. 583-592

Paper i proceeding

2006

Multi-disciplinary optimization of railway wheels

Jens Nielsen, C. R. Fredö

Journal of Sound and Vibration. Vol. 293 (3-5), p. 510-521

Artikel i vetenskaplig tidskrift

2005

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

Jens Nielsen, Anders Ekberg, Roger Lundén

Proc Instn Mech Engrs Part F - Journal of Rail and Rapid Transit. Vol. 219, p. 177-187

Artikel i vetenskaplig tidskrift

2005

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

Jonas Ringsberg, Francis Franklin, Lennart Josefson et al

International Journal of Fatigue. Vol. 27 (6), p. 680-694

Artikel i vetenskaplig tidskrift

2005

Influence of railway wheel flat impact on crack growth in rails

Jens Nielsen, Jonas Ringsberg, Luis Baeza

Proceedings of the Eighth International Heavy Haul Conference (IHHC8) in Rio de Janeiro, Brazil, June 14-16, 2005. Vol. Published on CD-ROM, p. 10-

Paper i proceeding

2005

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

Elena Kabo, Jens Nielsen, Anders Ekberg

Proceedings 19th IAVSD symposium, Milano, Italy, 29 August – 2 September, p. 3 pp-

Paper i proceeding

2005

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

Martin Hiensch, Per-Olof Larsson, Olof Nilsson et al

Wear. Vol. 258 (7-8), p. 964-972

Artikel i vetenskaplig tidskrift

2005

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

Anders Johansson, Jens Nielsen

19th IAVSD Symposium, Dynamics of Vehicles on Roads and Tracks, Milan, Italy, August 29 - September 2, 2005

Konferensbidrag (offentliggjort, men ej förlagsutgivet)

2004

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

Jens Nielsen, Johan Oscarsson

Journal of Sound and Vibration. Vol. 275 (3-5), p. 515-532

Artikel i vetenskaplig tidskrift

2004

Multi-disciplinary optimization of railway wheels

Jens Nielsen, Claes Fredö

Proceedings 8th International Workshop on Railway Noise. Vol. 1, p. 12-

Paper i proceeding

2004

Integrated analysis of dynamic traintrack interaction and rolling contact fatigue

Jens Nielsen, Anders Ekberg, Elena Kabo et al

14th International Wheelset Congress, p. 15 pp-

Paper i proceeding

2003

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

Jens Nielsen, Roger Lundén, Anders Johansson et al

Vehicle System Dynamics. Vol. 40 (1-3), p. 3-54

Artikel i vetenskaplig tidskrift

2003

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

Anders Johansson, Jens Nielsen

Proceedings of the Institution of Mechanical Engineers Part F: Journal of Rail and Rapid Transit. Vol. 217 (F2), p. 135-146

Artikel i vetenskaplig tidskrift

2003

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

Martin Hiensch, Per-Olof Larsson, Olof Nilsson et al

Proceedings of the Sixth International Conference on Contact Mechanics and Wear of Rail/Wheel Systems (CM2003) in Göteborg, Sweden, June 10-13, 2003 (Editors A. Ekberg, E. Kabo and J.W. Ringsberg), Vasastadens Bokbinderi AB, Sweden, p. 39-48

Paper i proceeding

2003

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

Martin Hiensch, Francis Franklin, Jens Nielsen et al

Fatigue & Fracture of Engineering Materials & Structures. Vol. 26 (10), p. 1007-1017

Artikel i vetenskaplig tidskrift

2003

Two-material rail for RCF and noise control

Martin Hiensch, Per-Olof Larsson, Didier Levy et al

Proceedings of the World Congress on Railway Research in Edinburgh, U.K., September 28-October 1, 2003. Vol. Published on CD-ROM, p. 12-

Konferensbidrag (offentliggjort, men ej förlagsutgivet)

2003

Researchers on the track of wheel-rail interaction

Anders Ekberg, Elena Kabo, Jens Nielsen et al

Railway Gazette International. Vol. 159 (6), p. 397-399

Artikel i övriga tidskrifter

2003

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

Anders Ekberg, Elena Kabo, Jens Nielsen

Proceedings of the 3rd International Conference ‘XXI Century Rolling Stock (ideas, requirements, projects)’, St Petersburg, Russia, July 3–5, 2003, p. 11 pp-

Paper i proceeding

2001