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The dynamic rollover threshold - a heavy truck sensitivity study
KTH, School of Engineering Sciences (SCI), Aeronautical and Vehicle Engineering, Vehicle Dynamics.ORCID iD: 0000-0002-4048-3452
2006 (English)In: International Journal of Vehicle Design, ISSN 0143-3369, E-ISSN 1741-5314, Vol. 40, no 03-jan, 228-250 p.Article in journal (Refereed) Published
Abstract [en]

Knowledge of rollover mechanics, which is required in heavy truck development, commonly relies on a static analysis, providing the steady-state rollover threshold, SSRT. In a rolling vehicle, kinetic energy is always present and that deteriorates the analysis of roll stability from SSRT and implies the need for a dynamic rollover threshold, DRT as a complement. A method to determine DRT is presented and a parameter sensitivity study The influences on SSRT and DRT, including interaction effects, from roll stiffnesses and roll centre heights, are calculated. Results show that a rigid truck and a tractor semitrailer combination are unequally sensitive to parameter changes. Design changes can hence affect SSRT and DRT differently, which indicates that two vehicles can be equally stable statically but differently dynamically. Therefore, if DRT is not analysed, a redesign of a vehicle can deteriorate roll stability even though it appears to improve it.

Place, publisher, year, edition, pages
2006. Vol. 40, no 03-jan, 228-250 p.
Keyword [en]
heavy truck, rollover, simulation, stability, vehicle dynamics
Identifiers
URN: urn:nbn:se:kth:diva-15389ISI: 000234901300015Scopus ID: 2-s2.0-31044443746OAI: oai:DiVA.org:kth-15389DiVA: diva2:333430
Note
QC 20100525Available from: 2010-08-05 Created: 2010-08-05 Last updated: 2017-12-12Bibliographically approved

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Stensson, Annika

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