Simulation of matrix-structured manufacturing systems

Increasing product variety, shorter product life cycles, and unknown future demands for each product type are key challenges of manufacturing companies. This paper describes the concept of matrix-structured manufacturing systems (MMS) which aims at providing high operational flexibility and scalability. The main goal of MMS is to eliminate a constant cycle time by providing redundant work stations for same operations as well as a flexible product routing. This enables to avoid starving and blocking and to achieve high system utilization while producing multiple product types with unknown demands and high volumes. The paper explains the main principles, elements, and control strategies of MMS and presents a simulation approach for the evaluation of MMS configurations. A case study shows the application of the simulation approach and how it can be used in the planning of MMS. The results reveal that a MMS configuration can lead to better utilizations of the exemplary manufacturing system in comparison to a sequential assembly line configuration.