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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 (author)
- Chalmers tekniska högskola,Chalmers University of Technology
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- Nielsen, Jens, 1963 (author)
- Chalmers tekniska högskola,Chalmers University of Technology
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- Baeza, Luis (author)
- Universitat Politecnica de Valencia (UPV),Polytechnic University of Valencia (UPV)
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(creator_code:org_t)
- Elsevier BV, 2011
- 2011
- English.
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In: Journal of Sound and Vibration. - : Elsevier BV. - 1095-8568 .- 0022-460X. ; 330:22, s. 5309-5321
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Abstract
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- 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.
Subject headings
- TEKNIK OCH TEKNOLOGIER -- Maskinteknik (hsv//swe)
- ENGINEERING AND TECHNOLOGY -- Mechanical Engineering (hsv//eng)
Keyword
- nta g
- corrugation
- rail contact forces
- 2007
- irregularities
- aar n
- 2005
Publication and Content Type
- art (subject category)
- ref (subject category)
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