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The dynamic rollover threshold - a heavy truck sensitivity study
KTH, Skolan för teknikvetenskap (SCI), Farkost och flyg, Fordonsdynamik.ORCID-id: 0000-0002-4048-3452
2006 (Engelska)Ingår i: International Journal of Vehicle Design, ISSN 0143-3369, E-ISSN 1741-5314, Vol. 40, nr 03-jan, s. 228-250Artikel i tidskrift (Refereegranskat) 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.

Ort, förlag, år, upplaga, sidor
2006. Vol. 40, nr 03-jan, s. 228-250
Nyckelord [en]
heavy truck, rollover, simulation, stability, vehicle dynamics
Identifikatorer
URN: urn:nbn:se:kth:diva-15389ISI: 000234901300015Scopus ID: 2-s2.0-31044443746OAI: oai:DiVA.org:kth-15389DiVA, id: diva2:333430
Anmärkning
QC 20100525Tillgänglig från: 2010-08-05 Skapad: 2010-08-05 Senast uppdaterad: 2017-12-12Bibliografiskt granskad

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