Influence of link suspension characteristics variation on two-axle freight wagon dynamics
2006 (English)In: Vehicle System Dynamics, ISSN 0042-3114, Vol. 44, no Supplement 1, 415-423 p.Article in journal (Refereed) Published
The link suspension is the most prevailing suspension system for freight wagons in central and western Europe. Link suspension systems have strong non-linear characteristics including a hysteresis loop. The loop exhibits usually three characteristic sections with different tangential stiffnesses. The actual contact geometry of the links and end bearings has a significant influence on the characteristics. By wear in ordinary service. the contact geometry changes considerably, thus causing the characteristics to change. In summary, it appears that the link suspension characteristics are very sensitive to several factors. being hard to control in the real world of freight wagon operations. The various stiffnesses and hysteresis loops are found to have a strong influence on the ride qualities of vehicles. This paper presents non-linear multibody simulations investigating these matters. As long as the characteristics cannot be controlled within closer limits than found in this study, there is a strong need for the sensitivity analysis to be made, both in predictive multibody simulations of vehicle dynamics as well as for verification and acceptance tests.
Place, publisher, year, edition, pages
2006. Vol. 44, no Supplement 1, 415-423 p.
Dynamics; Freight wagon; Link suspension; Ride quality; Simulation; Test; Automobile suspensions; Dynamics; Freight cars; Hysteresis; Hysteresis loops; Magnetic materials; Sensitivity analysis; Stiffness
IdentifiersURN: urn:nbn:se:kth:diva-7371DOI: 10.1080/00423110600872416ISI: 000244729300040ScopusID: 2-s2.0-65249090788OAI: oai:DiVA.org:kth-7371DiVA: diva2:12377
QC 201008022007-07-132007-07-132011-10-03Bibliographically approved