On Efficient Modelling of Wheel-Rail Contact in Vehicle Dynamics Simulation

↓ Direkt till sidans innehåll
↓ Direkt till sidans sekundära innehåll (sidomenyn)

Sökning: WFRF:(Berg Roger) > (2015-2019) > On Efficient Modell...

Shahzamanian Sichani, Matin,1986-KTH,Spårfordon (författare)

On Efficient Modelling of Wheel-Rail Contact in Vehicle Dynamics Simulation

BokEngelska2016

Förlag, utgivningsår, omfång ...

Stockholm :KTH Royal Institute of Technology,2016
xiv, 97 s.
electronicrdacarrier

Nummerbeteckningar

LIBRIS-ID:oai:DiVA.org:kth-181691
ISBN:9789175958460
https://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-181691URI

Kompletterande språkuppgifter

Språk:engelska
Sammanfattning på:engelska

Ingår i deldatabas

SwePubSwePub

Klassifikation

Ämneskategori:vet swepub-contenttype
Ämneskategori:dok swepub-publicationtype

Serie

TRITA-AVE,1651-7660 ;2016:02

Anmärkningar

QC 20160202
The wheel-rail contact is at the core of all research related to vehicletrackinteraction. This tiny interface governs the dynamic performanceof rail vehicles through the forces it transmits and, like any high stressconcentration zone, it is subjected to serious damage phenomena. Thus,a clear understanding of the rolling contact between wheel and rail is keyto realistic vehicle dynamics simulation and damage analysis.In a multi-body dynamics simulation, the demanding contact problemshould be evaluated at about every millisecond for several wheel-rail pairs.Hence, a rigorous treatment of the contact is highly time-consuming.Simplifying assumptions are therefore made to accelerate the simulationprocess. This gives rise to a trade-o between the accuracy and computationaleciency of the contact model in use.Conventionally, Hertz+FASTSIM is used for calculation of the contactforces thanks to its low computational cost. However, the elliptic patchand pressure distribution obtained by Hertz' theory is often not realisticin wheel-rail contact. Moreover, the use of parabolic traction bound inFASTSIM causes considerable error in the tangential stress estimation.This combination leads to inaccurate damage predictions.Fast non-elliptic contact models are proposed by others to tacklethis issue while avoiding the tedious numerical procedures. The studiesconducted in the present work show that the accuracy of these models iscase-dependent.To improve the accuracy of non-elliptic patch and pressure estimation,a new method is proposed. The method is implemented in an algorithmnamed ANALYN. Comparisons show improvements in patch and, particularly,pressure estimations using ANALYN.In addition, an alternative to the widely-used FASTSIM is developed, named FaStrip. Unlike FASTSIM, it employs an elliptic traction boundand is able to estimate the non-linear characteristic of tangential stressdistribution. Comparisons show more accurate estimation of tangentialstress and slip velocity distribution as well as creep forces with FaStrip.Ultimately, an ecient non-elliptic wheel-rail contact model consistingof ANALYN and FaStrip is proposed. The reasonable computationalcost of the model enables it to be used on-line in dynamics simulationand its accuracy can improve the damage predictions.

Ämnesord och genrebeteckningar

TEKNIK OCH TEKNOLOGIER Maskinteknik Farkostteknik hsv//swe
ENGINEERING AND TECHNOLOGY Mechanical Engineering Vehicle Engineering hsv//eng
TEKNIK OCH TEKNOLOGIER Maskinteknik Tribologi hsv//swe
ENGINEERING AND TECHNOLOGY Mechanical Engineering Tribology hsv//eng
wheel-rail contact
non-elliptic contact
rail vehicle dynamics
rolling contact
vehicle-track interaction
wheel-rail damage
Järnvägsgruppen - Fordonsteknik
Järnvägsgruppen - Fordonsteknik
Järnvägsgruppen - Tribologi
The KTH Railway Group - Tribology
Vehicle and Maritime Engineering
Farkostteknik

Biuppslag (personer, institutioner, konferenser, titlar ...)

Berg, Mats (preses)
Enblom, Roger,DocentKTH,Spårfordon(Swepub:kth)u1y0mbpk (preses)
Alonso, Asier,Dr.CAF, Beasain, Spanien (opponent)
KTHSpårfordon (creator_code:org_t)

Internetlänk

Hitta via bibliotek

On Efficient Modelling of Wheel-Rail Contact in Vehicle Dynamics Simulation (Sök publikationen i LIBRIS)

Till lärosätets databas

Hitta mer i SwePub

Av författaren/redakt...: Shahzamanian Sic ...; Berg, Mats; Enblom, Roger, D ...; Alonso, Asier, D ...

Om ämnet

TEKNIK OCH TEKNOLOGIER: TEKNIK OCH TEKNO ...; och Maskinteknik; och Farkostteknik

TEKNIK OCH TEKNOLOGIER: TEKNIK OCH TEKNO ...; och Maskinteknik; och Tribologi

Delar i serien: TRITA-AVE,

Av lärosätet: Kungliga Tekniska Högskolan

Sök utanför SwePub

Sök vidare i:: Google; Google Book Search; Google Scholar

Kungliga biblioteket hanterar dina personuppgifter i enlighet med EU:s dataskyddsförordning (2018), GDPR. Läs mer om hur det funkar här.
Så här hanterar KB dina uppgifter vid användning av denna tjänst.

LIBRIS.kb.se