Today's industrial world is the arena of competition between managers, industry owners and optimum methods for efficient utilization of resources in order to decrease the costs and increase productivity in production systems. Since the use of computer simulation as an efficient tool for analyzing the systems is not common in Iran, so this research try to provide a suitable context for using this tool widely in industries of Iran through a simulation experiment in Mahak Motlagh industrial

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... turing company. Collecting production rate data took 6 months demand then different methods of production were investigated. The result was extracting 8 methods for this purpose. Available information implied that production circulations are close together in each of those methods confirming production distribution function as normal. In order to confirm this fact, we used MINITAB, STATISTICAL software and distribution function of each production method were extracted. Then production simulation model was developed and real data were written using ENTERPRISE DYNAMICS and was run for 6 months. Through investigating the costs of each method and simulation model output, optimum synthesised model was selected. Finally the processes of validity confirmation of optimum simulation model were conducted using variances hypothesis test with 99.5% accuracy.