Comparison between Traditional Cell and Virtual Cell Layouts Using Process Plans with Alternatives by Means of Simulation and Design of Experiments
Cláudio Decker Jr1; João Carlos Espíndola Ferreira1; Fernando Martineli Loureiro2; Guilherme José da Silva2
1 Universidade Federal de Santa Catarina; 2 Universidade do Estado de Santa Catarina
doi:10.20906/CPS/COB-2015-0683
Resumo
The choice of the physical arrangement and the process plan is essential in order to improve the efficiency and effectiveness of a manufacturing system. Many industries operate in a batch-based approach using the traditional cell layout, which seeks to attain high flexibility and efficiency that are characteristic of the traditional cellular arrangement. The objective of this study is to compare the traditional cell layout with the virtual cell layout using simulation and design of experiments. Each system contains 10 machines, 8 operators, and 3 suppliers, and an analysis is made using five control factors with regard to resource utilization. Initially production orders are generated for the systems, which consist of: features present in the parts, amount of duplicate features, lot size, type of demand, and the type of process plan (with or without alternatives). These data are stored in a spreadsheet that is used as input to the simulation model. The results of simulation are stored in another spreadsheet for analysis of variance (ANOVA). In this work full factorial design was used in the execution of the experiments. As a result, the resource utilization of the virtual cell layout is 20% higher than the traditional cell layout.
Palavras-chave: Virtual Cell Layout; Traditional Cell Layout; Simulation; Manufacturing; Design of Experiments