Performance analysis of closed-loop assembly lines with general processing times and finite buffer spaces.

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Kühne Logistics University
Grosser Grasbrook 17, 20457 Hamburg

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Dr. Svenja Lagershausen

Research Associate

University of Hannover


This study analyzes flow lines with converging and diverging material flow, limited buffer sizes, generally distributed processing times, and a constant number of workpieces as a closed assembly or disassembly queueing network. A decomposition approach in which each subsystem is modeled as a G/G/1/K queueing system is used. The population constraint is enforced by requiring that the sum of the expected number of customers in the subsystems is equal to the total number of workpieces. The results of a simulation experiment indicate that the proposed approximation provides accurate results and that it performs better than other approaches.

About the Presenter

Svenja Lagershausen works as a research associate at the Department of Production Management at the University of Hanover (Germany). Prior to her current position, she worked as a research assistant in the Department of Supply Chain Management and Production at the University of Cologne. Her research interests are in the field of performance analysis and configuration of stochastic systems. Her work has been published in journals such as IIE Transactions, Annals of Operations Research and International Journal of Production Research.

more info about Dr. Svenja Lagershausen

About the Seminar

The KLU research seminar series is a regular meeting of PhD students, Post-Docs and professors who conduct research in the field of logistics and supply chain management. The research seminar is open to the public and we happily welcome guests.