The purpose of this study is to present a case study based on real production data in which the computer simulation was used to analyze the efficiency of the current layout, paying attention to indicators defined by the value stream mapping, which determined the need of layout restructuring. For this purpose, it was used a computer tool for discrete events that permits to explore the features of the system, aiming to provide a more comprehensive view of the assembly line, since the software has

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... several performance analysis tools. The method was developed through "in loco" data collection, in similar cases studied in the literature, and in the computation tool learning, thus creating a virtual environment that allowed simulate various layout restructuring strategies to reach the desired result, verifying a great potential for improvement with this restructuring. Finally, the results obtained with the simulation proved that its use emerges as a powerful tool for evaluating the rationalization of resources and production layout restructuring, making clear the advantages and features of the use of computer simulation as a tool to help making decisions in industrial manufacturing process.