Warehouse sequencing in the steel supply chain as a generalized job shop model

Warehouse management plays an important role in efficient steel supply chains. In particular, optimal scheduling for all warehousing activities is a challenging task in this context: Handling incoming coils from the steel facility, placing these coils in their dynamically assigned locations in the warehouse, determining a sequence in which the outgoing coils, corresponding to the current customer orders, should be visited by the crane in order to cover all delivery necessities on time. To capture all the dynamic situations of the warehousing processes, we formulate our problem as a generalized dynamic job shop sequencing model and develop a heuristic solution concept for a real warehouse (logistic centre) of a steel supply chain.