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Graz, Austria

Rubesa J.,Kompetenzzentrum | Suhr B.,Kompetenzzentrum
ECS Transactions | Year: 2013

Fast and reliable simulation of an electrochemical Li-ion cell model is achieved using the proper orthogonal decomposition (POD) combined with the empirical interpolation method (EIM). A new POD basis construction method for efficient model reduction is introduced for the simulation of batteries at different C-Rates, pulses, constant voltage charge and rest steps. The proposed reduced order model agrees well with the finite element (FE) method solver and requires 14 times less computation time than the FE model. © 2014 The Electrochemical Society.

Six K.,Kompetenzzentrum | Rosenberger M.,Kompetenzzentrum | Marte C.,Kompetenzzentrum | Trummer G.,Kompetenzzentrum
ZEVrail | Year: 2011

The resulting loads within the wheel/rail contact and the correlating damage patterns are mainly influenced by the requirements on the vehicles as well as by the boundary conditions which have to be handled by the vehicles. Furthermore relevant standards have some influence on the interaction between wheel and rail. The mechanisms and their interdependencies behind the development of damage are still not fully understood. This causes different and in most of the cases not fully assured views on that issue. The goal of this report is the investigation and comparison of the influence of several vehicle parameters, resulting from requirements, boundary conditions and standards, on the loading of the wheel/rail contact. This is done by investigations on a simple vehicle model. In this way a clearer view with respect to some important aspects of the vehicle-track damage behaviour will be generated.

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