In a previous paper, a very rough model was proposed to investigate the unsatisfactory hunting behavior of some old locomotive prototypes, which prevented high speed service in the third decade of the last century. The first idea was to exploit nonlinear equations in order to investigate chaotic behavior, because large hunting oscillations, suddenly rising, were reported in the literature. The model was first suggested by the similarity between the usual piecewise linear tread taper and the Chua’s diode characteristic, and evolved in a circuit which was able to mimic, at least in some ways, the locomotive behavior. Although useless as design tool, because a careful a posteriori optimization is needed due to an insufficient number of parameters, the model seems to deserve further investigation. Here, some work is presented, to refine the previous analysis and to present a new version of the model, no longer limited to oscillation modes dominated by natural frequencies of body and bogies, and suitable to simulate kinetic trajectories, elastic or viscous links, and dampers.
Nonlinear Dynamics – Springer Journals
Published: Oct 10, 2017
It’s your single place to instantly
discover and read the research
that matters to you.
Enjoy affordable access to
over 18 million articles from more than
15,000 peer-reviewed journals.
All for just $49/month
Query the DeepDyve database, plus search all of PubMed and Google Scholar seamlessly
Save any article or search result from DeepDyve, PubMed, and Google Scholar... all in one place.
All the latest content is available, no embargo periods.
“Whoa! It’s like Spotify but for academic articles.”@Phil_Robichaud