Many organizations know the benefits of simulation and desire to add this business intelligence to their RUJDQL]DWLRQ ¶V SURFHVV LPSURYHPHQW WRRONLW +RZHYHU FKDOOHQJHV H[LVW WKDW SUHYHQW WKHVH RUJDQizations from actually executing and successfully bringing simulation into their organization. From the lack of the right model building resources to missing upper management support to not having robust software, simulation initiatives can dwindle for various reasons. This paper will address why simulation is important, what makes a good project, who should build the model, the expected return as well as common pitfalls. Practical advice for organizations serious about developing internal expertise and conducting simulation projects will be provided.
INTRODUCTIONWhile there are many disciplines of simulation, this paper references discrete-event simulation (DES).With DES, analysts model a system along with the associated events and variability, in a computer model, for the benefit of understanding how the system works and how various changes will impact system performance. For example, a manufacturing facility with 5,000 different products, over 100 employees and 50 different workstations might be looking to automate an aspect of their plant. They execute a simulation project to understand how changing a manual process to an automated process will impact their entire system by comparing key performance measures such as throughput, cycle time and work in process. The simulation will help them make critical decisions: whether to automate, what equipment will be necessary, what resources are needed, etc. DES truly is one of the most powerful tools for predicting future system performance. Millions of dollars are at stake when designing and re-designing complex systems and simulation studies will provide an insurance policy against major changes. Most often, business problems are addressed using common desktop tools such as Microsoft Excel® and Microsoft Access®, or resorting to the gut feel from senior process owners. These methods are familiar, inexpensive and readily available, so it is no surprise that they are heavily relied on for key decision making. However, most organizations are missing a tool in their toolbox. Think back to your last major project. What would you have done differently? Did you plan for too much capacity or too little? Did you have all the right staff and other resources in place? What if you could have predicted the design flaws before they occurred? A simulation study of a complex system will always allow analysts to go beyond static calculations and provide accurate insight into the true performance of operations. If simulation is so SRZHUIXO DQG LPSRUWDQW ZK\ LVQ ¶W LW D VWDQGDUG practice in every organization? It should be. Basic queuing theory and stochastic nature are part of every system and should be understood by all process improvement professionals. This paper will provide practical advice for organizations on how to introduce simulation and how to benefit from project outcomes withi...