Modeling And Simulation Of The Supply Chain Complexity With Product And Demand

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Chapter 5 Modeling And Simulation Of The Supply Chain Complexity With Product And Demand Characterisation In the real world, supply chains are more complex, an information exchange difficult, since real demand and delivery times seldom are known. To reproduce this unpredictability to a certain extent, we have order and delivery delays as well as no information sharing between the sites. A supply chain contains different flows. The information flow and the physical - the product flow are considered. Real System: If implementing a simulation for a real system, collect input and output data where applicable to use during the validation and simulation process. For a virtual system, the quality of the data and understanding its origin is significant to the validation process according to Law and Kelton. Modeling: In a first step the real system is analyzed and a model of it is specified. The level of abstraction depends on the goal of the simulation. The modeling can be done in a general programming language like UML, a Visio chart or in Mathematica. The resulting formal model is checked for its suitability against the real system. Implementation: After the system has been abstracter to a model, the model is implemented in a simulator. The simulator contains the physical model, which has to be verified against the formal model. Model Validation : Conclusions need to be reached from a valid system to achieve the set objectives. The validation process determines that the

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