Sohny, T.: Referenzmodell basierend auf der Wertstrommethode zur Bewertung von automatisierten Materialflusssystemen der Produktion in der Angebotsphase. Series "Fortschritte in der IT in Produktion und Logistik", Vol 5. Göttingen: Cuvillier 2023.

Automated material flow systems in production are highly dynamic and at the same time very complex. Suppliers have the challenge of guaranteeing a minimum throughput performance for such customised material flow systems when submitting their offer. Over-dimensioning, however, to ensure throughput, resulting in additional costs, leads to decreased competitive¬ness. With simulation technology, executable models can represent dynamic and stochastic aspects of systems. Thus, alternatives can be evaluated. However, simulation is too time-consuming and cost-intensive at the time of the bidding phase. Therefore, it is regularly used only after an order has already been placed. Possible planning errors are recognised late and lead to cost-intensive adjustments. In this work, a reference model based on the value stream method is developed, which contributes to a reduced modelling effort of simulation models for automated material flow systems at the time of the bidding phase. For efficient modelling, the user of the reference model has a construction scheme developed for this purpose, consisting of individual model elements with defined structures and relationships. Each model element represents a real system element of an automated material flow system with its characteristic properties, represented by system states, logic aspects, and attributes. The description of the system elements, with a suitable granularity for the bidding phase, is based on the value stream method, which is proven to be successful in the industrial environment, extended by the aspect of dynamics. The modular structure of the construction scheme and the description method allows for an application-specific parameterisation and the selection of specific model elements. The user is supported by a procedure for the specific use of the model elements, in a structured system analysis and the formal model description. With the execution of the modelling according to the reference model, the user receives a formalised model, which can be implemented simulator-specific in a simulation system without further explanation. This enables the supplier to secure his guaranteed throughput per offer in the shortest possible time and to increase his competitiveness by studying what-if scenarios. The usability of the reference model is demonstrated by a simulation study of a real material flow system. It is shown that the given structure and the defined model elements support the designer in the system analysis and model formalisation in an application-specific way and, thus, reduce the modelling effort. The reliability and sufficiently accurate representation is proven by a phased verification and validation and the comparison with a detailed model.