Reference : Rail Car Fleet Design: Optimization of Structure and Size
Scientific journals : Article
Business & economic sciences : Production, distribution & supply chain management
http://hdl.handle.net/10993/30922
Rail Car Fleet Design: Optimization of Structure and Size
English
Klosterhalfen, Steffen mailto [University of Luxembourg > Faculty of Law, Economics and Finance (FDEF) > Center for Research in Economic Analysis (CREA) > ; University of Luxembourg > Faculty of Law, Economics and Finance (FDEF) > Center for Research in Economic Analysis (CREA) > Luxembourg Centre for Logistics and Supply Chain Management (LCL)]
Kallrath, J. [> >]
Fischer, G. [> >]
2014
International Journal of Production Economics
Elsevier Science
157
112 - 119
Yes (verified by ORBilu)
International
0925-5273
Amsterdam
The Netherlands
[en] Fleet management ; Fleet structure ; Inventory ; Safety stock
[en] We develop a model to determine the optimal structure and size of a rail car fleet at a chemical company under uncertainty in demand and travel times as well as substitution between rail car types. First, we formulate an MILP model that accounts for the substitution relations between the types and minimizes the total direct rail car cost under given rail car availability constraints and a predefined maximum number of types. Second, based on the fleet structure obtained by the MILP model, the fleet size is computed by using an approximation from inventory theory that considers the existing uncertainties. Compared to the current approach of the rail car fleet management team, the model produces a reduction in safety stock of 120 rail cars and thus direct cost savings of 8% as well as further indirect cost savings due to a smaller number of rail car types, which reduces the switching effort of the rail cars on the storage tracks.
http://hdl.handle.net/10993/30922
10.1016/j.ijpe.2013.05.008
http://www.sciencedirect.com/science/article/pii/S092552731300234X
The International Society for Inventory Research, 2012

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