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Dynamic train-track...
Dynamic train-track interaction at high vehicle speeds-Modelling of wheelset dynamics and wheel rotation
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- Torstensson, Peter T, 1981 (författare)
- Chalmers tekniska högskola,Chalmers University of Technology
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- Nielsen, Jens, 1963 (författare)
- Chalmers tekniska högskola,Chalmers University of Technology
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- Baeza, Luis (författare)
- Universitat Politecnica de Valencia (UPV),Polytechnic University of Valencia (UPV)
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(creator_code:org_t)
- Elsevier BV, 2011
- 2011
- Engelska.
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Ingår i: Journal of Sound and Vibration. - : Elsevier BV. - 1095-8568 .- 0022-460X. ; 330:22, s. 5309-5321
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Abstract
Ämnesord
Stäng
- Vertical dynamic train-track interaction at high vehicle speeds is investigated in a frequency range from about 20 Hz to 2.5 kHz. The inertial effects due to wheel rotation are accounted for in the vehicle model by implementing a structural dynamics model of a rotating wheelset. Calculated wheel-rail contact forces using the flexible, rotating wheelset model are compared with contact forces based on rigid, non-rotating models. For a validation of the train-track interaction model, calculated contact forces are compared with contact forces measured using an instrumented wheelset. When the system is excited at a frequency where two different wheelset mode shapes, due to the wheel rotation, have coinciding resonance frequencies, significant differences are found in the contact forces calculated with the rotating and non-rotating wheelset models. Further, the use of a flexible, rotating wheelset model is recommended for load cases leading to large magnitude contact force components in the high-frequency range (above 1.5 kHz). In particular, the influence of the radial wheel eigenmodes with two or three nodal diameters is significant. (C) 2011 Elsevier Ltd. All rights reserved.
Ämnesord
- TEKNIK OCH TEKNOLOGIER -- Maskinteknik (hsv//swe)
- ENGINEERING AND TECHNOLOGY -- Mechanical Engineering (hsv//eng)
Nyckelord
- nta g
- corrugation
- rail contact forces
- 2007
- irregularities
- aar n
- 2005
Publikations- och innehållstyp
- art (ämneskategori)
- ref (ämneskategori)
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