A hybrid simulation-based optimization approach for scheduling dinamic block assembly in shipbuilding

V. G. ACHKAR; C. A. MÉNDEZ; GARCÍA-DEL-VALLE, A.; BASÁN, NATALIA P.

Proceedings of the European Modeling and Simulation Symposium, 2017

CAL-TEK S.r.l.

Lugar: Barcelona; Año: 2017; p. 83 - 90

Shipbuilding is a complex and long-term process which requires the coordination of a large amount of resources and several types of manufacturing process planning. To achieve scheduling optimization of block production line and therefore, greater competitiveness in shipbuilding market, an efficient medium-term and short-term operations strategies are used. This work focuses on a real-world case study involving a large amount of blocks. Hence, a novel simulation-based optimization approach is developed for the efficient scheduling of production and assembly operations in a system of multi-stage multi-product production of a shipyard. The goal is to generate good schedules with modest computational effort minimizing the makespan (the total processing, waiting, and assembly time) while satisfying a large set of hard constraints. Mathematical model results are generated by using data from a real shipyard and improved through the simulation. Several examples are solved and reported to illustrate the capabilities of the approach proposed.