000013232 001__ 13232
000013232 005__ 20161114160332.0
000013232 04107 $$aeng
000013232 046__ $$k2009-06-22
000013232 100__ $$aMetrikine A., V.
000013232 24500 $$aParametric instability of a wheelset of high-speed train caused by the spatial periodicity of a railway track

000013232 24630 $$n2.$$pComputational Methods in Structural Dynamics and Earhquake Engineering
000013232 260__ $$bNational Technical University of Athens, 2009
000013232 506__ $$arestricted
000013232 520__ $$2eng$$aThe wheelsets of a train running at constant speed can be expected to experience parametric resonance due to the spatial periodicity of the rail-supporting structure. The wheelset is modelled as a single-mass oscillator moving along the track. The model for the track is an infinitely long Timoshenko beam on identical, periodically spaced, flexible discrete supports. It is assumed that no external vertical forces act on the wheelset-track system. A procedure is developed for finding the system parameters that correspond to periodic vibrations of the moving wheelset with non-zero amplitudes. Given the assumed linearity of the system and a non-zero damping in the rail-supporting structure, these system parameters define the boundaries of the zones of parametric resonance. Within these zones, the vertical vibrations of the wheelsets are unstable.

000013232 540__ $$aText je chráněný podle autorského zákona č. 121/2000 Sb.
000013232 653__ $$aRailway Track, Moving Load, Parametric Resonance, Wheelset Abstract. The wheelsets of a train running at constant speed can be expected to experience parametric resonance due to the spatial periodicity of the rail-supporting structure. The wheelset is modelled as a single-mass oscillator moving along the track. The model for the track is an infinitely long Timoshenko beam on identical, periodically spaced, flexible discrete supports. It is assumed that no external vertical forces act on the wheelset-track system. A procedure is developed for finding the system parameters that correspond to periodic vibrations of the moving wheelset with non-zero amplitudes. Given the assumed linearity of the system and a non-zero damping in the rail-supporting structure, these system parameters define the boundaries of the zones of parametric resonance. Within these zones, the vertical vibrations of the wheelsets are unstable.

000013232 7112_ $$aCOMPDYN 2009 - 2nd International Thematic Conference$$cIsland of Rhodes (GR)$$d2009-06-22 / 2009-06-24$$gCOMPDYN2009
000013232 720__ $$aMetrikine A., V.
000013232 8560_ $$ffischerc@itam.cas.cz
000013232 8564_ $$s174924$$uhttps://invenio.itam.cas.cz/record/13232/files/CD329.pdf$$yOriginal version of the author's contribution as presented on CD, section: Dynamic effects on high-speed railway tracks - ii (MS).
000013232 962__ $$r13074
000013232 980__ $$aPAPER