Wheel/rail contact

Article: Wheel/rail contact

Wheel/rail Test Rig A - Wheelset on Rail Roller
Location

Kirchmöser, Bahntechnikerring 74

Use

Roller rig for investigating wheel/rail contact

FocusWheel/rail wear
  • Out-of-round wheels
  • Wheel tread damage due to rolling contact fatigue
  • Influence of wheel material
  • Influence of wheel profile
  • Validation and parametrisation of wheel/rail simulation models
  • Testing
  • Wheel materials
  • Wheel profiles
  • New developments for non-destructive testing or diagnostic systems
  • Friction modifiers
Acoustic measurements
  • Rolling noise
  • Curve squeal
  • Influence of wheel noise absorbers
Wheelset
  • Non-driven and powered wheelsets
  • Wheel diameter: 400 to 1,250 mm
  • Material and profile: variable
Rail roller
  • Underfloor arrangement
  • Diameter 2.1 m
  • Rail material: R260
  • Rail profile/inclination: 60E2 / 1:40
Parameters
  • Axle load: up to 340 kN (34 t)
  • Lateral force: up to 30 kN
  • Speed: up to 300 km/h
  • Curves: from 300 m radius up to ∞
  • Lubrication or moistening/irrigation possible

Equipment

  • Concentricity measurement
  • Cross-section measurement
  • Axle box accelerometers
  • NDT for crack detection

Dr. Stefan Hartmann

DB Systemtechnik GmbH
Werkstoff und Fügetechnik

Bahntechnikerring 74
14774 Brandenburg-Kirchmöser
Germany

Wheel/Rail Test Rig A - Single Wheel on Rail (linear Test unit)
Location

Kirchmöser, Bahntechnikerring 74

UseLinear test rig for investigating wheel/rail contact
FocusWheel/rail wear
  • Cross-section wear
  • Rolling contact fatigue (head checks)
  • Influence of rail material
  • Influence of wheel/rail profile
  • Weld joints
  • Common crossings / frogs
  • Validation and parametrisation of wheel/rail simulation models

Qualification of rails as per DBS 918 254

Testing

  • Rail materials
  • Rail profiles
  • New developments for non-destructive testing or diagnostic systems
  • Friction modifiers
Wheel
  • Wheel diameter: 800 - 920 mm
  • Material and profile: variable
Parameters
  • 1,000 load cycles/h
  • 20,000 gross tonnes/h with 20 t axle load
  • Axle load: up to 40 t
  • Lateral force: up to 20 kN
  • Curves: from 300 m radius up to ∞
  • Lubrication or moistening/irrigation possible
Equipment
  • 3D geometry measurement
  • NDT for crack detection

Dr. Stefan Hartmann

DB Systemtechnik GmbH
Werkstoff und Fügetechnik

Bahntechnikerring 74
14774 Brandenburg-Kirchmöser
Germany

Wheel/rail Test Rig B - Linear Test Rig 
Location

Kirchmöser, Bahntechnikerring 74

Use

Linear test rig for investigating wheel/rail contact when applying longitudinal forces
FocusWheel/rail wear
  • Cross-section wear
  • Rolling contact fatigue (head checks, squats)
  • Influence of wheel/rail material, material pairing
  • Influence of wheel/rail profile, profile pairing
  • Weld joints
  • Validation and parametrisation of wheel/rail wear simulation models

Testing

  • New rail materials
  • Wheel and rail profiles, profile pairing
  • New developments for non-destructive testing or diagnostic systems
  • Friction modifiers
Wheel
  • Wheel diameter: from 640 – 1,250 mm
  • Material and profile: variable
Rail
  • Length: 1.2 to 1.4 m
  • Material and profile: variable
Parameters
  • 5,000 load cycles/h
  • 100,000 gross tonnes/h at 20 t axle load
  • Axle load: up to 40 t
  • Longitudinal force: up to 34 kN
  • Lateral force: up to 60 kN
  • Curves: from 120 m radius up to ∞
  • Lubrication or moistening possible

Equipment

  • Thermography
  • 3D geometry measurement
  • NDT for crack detection

Patrick Hoffmann

Werkstoff- und Fügetechnik

DB Systemtechnik GmbH

Bahntechnikerring 74
14774 Brandenburg-Kirchmöser
Germany

Wheel/Rail Test Rig C - Wheelset on Rail Roller
Location

Kirchmöser, Bahntechnikerring 74

Use

Roller rig for wheel and wheelset constructions
FocusRolling contact tests under real loads
  • New wheel constructions, also rubber-sprung
  • New wheelset constructions
  • Variable-gauge wheelsets
  • Crack propagation tests on axles
  • Testing new developments for non-destructive testing or diagnostic systems

Wheel seat

  • Non-driven and powered wheelsets
  • Wheel diameter: 600 to 1,200 mm
  • Profile: cylindrical
  • Material: variable
Rail roller
  • Underfloor arrangement
  • Diameter 2.1 m
  • Rail profile: cylindrical
Parameters
  • Axle load: up to 340 kN
  • Lateral force: up to 80 kN
  • Speed: up to 160 km/h
  • Programmable load spectrums
Equipment
  • Telemetry for strain gauge measurements
  • Thermography for rubber-sprung wheel constructions

Thorsten Geburtig

Werkstoff- und Fügetechnik

DB Systemtechnik GmbH

Bahntechnikerring 74
14774 Brandenburg-Kirchmöser
Germany

Messradsatz

 Bild: Messradsatz - Kalibrierstand in Minden

Ort

Minden, Pionierstraße 10

Einsatz

  • Bestimmung der Radkräfte Q, der Führungskräfte Y und der longitudinalen Kräfte Tx zwischen Rad und Schiene.
  • Bestimmung des Radaufstandspunktes des Rades auf der Schiene während der Messfahrten.
Ausstattung

mit Dehnungsmessstreifen und einer induktiven Telemetrie bestückter Radsatz

Prüfbedingungen

Fahrtechnische Prüfungen nach EN 14363 oder Kundenanforderung

Olaf Schwabe

DB Systemtechnik GmbH
Entwicklungsingenieur Betreuung Messradsätze

Pionierstr. 10
32423 Minden
Germany