首页|Modelling dynamic pantograph loads with combined numerical analysis

Modelling dynamic pantograph loads with combined numerical analysis

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Appropriate interaction between pantograph and catenary is imperative for smooth operation of electric trains.Changing heights of overhead lines to accommodate level crossings,overbridges,and tunnels pose significant challenges in maintain-ing consistent current collection performance as the pantograph aerodynamic profile,and thus aerodynamic load changes significantly with operational height.This research aims to analyse the global flow characteristics and aerodynamic forces acting on individual components of an HSX pantograph operating in different configurations and orientations,such that the results can be combined with multibody simulations to obtain accurate dynamic insight into contact forces.Specifically,computational fluid dynamics simulations are used to investigate the pantograph component loads in a representative set-ting,such as that of the recessed cavity on a Class 800 train.From an aerodynamic perspective,this study indicates that the total drag force acting on non-fixed components of the pantograph is larger for the knuckle-leading orientation rather than the knuckle-trailing,although the difference between the two is found to reduce with increasing pantograph extension.Combining the aerodynamic loads acting on individual components with multibody tools allows for realistic dynamic insight into the pantograph behaviour.The results obtained show how considering aerodynamic forces enhance the realism of the models,leading to behaviour of the pantograph-catenary contact forces closely matching that seen in experimental tests.

Pantograph-catenary interactionPantograph aerodynamicsComputational fluid dynamicsPantograph loadsCurrent collection performance

F.F.Jackson、R.Mishra、J.M.Rebelo、J.Santos、P.Antunes、J.Pombo、H.Magalh?es、L.Wills、M.Askill

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School of Computing and Engineering,University of Huddersfield,Huddersfield,UK

School of Computing and Engineering,Institute of Railway Research,University of Huddersfield,Huddersfield,UK

IDMEC,Instituto Superior Técnico,Universidade de Lisboa,Lisbon,Portugal

ISEL,Instituto Politécnico de Lisboa,Lisbon,Portugal

Hitachi Rail,Newton Aycliffe,UK

Wabtec/Brecknell Willis,Chard,UK

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RSSBFCT

RSSB/COF-UOH-49UIDB/50022/2020

2024

10.1007/s40534-023-00318-0

铁道工程科学(英文)
西南交通大学

铁道工程科学(英文)

影响因子：0.403
ISSN：2662-4745
年,卷(期)：2024.32(1)
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