Improving the Efficiency of Vehicle Queuing and Product Conveyance through Simulation: A Case Study
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Abstract
This research examines the process of enhancing product delivery efficiency. The objective is to reduce both vehicle waiting times and product conveying times in the warehouse, thereby increasing the overall number of deliveries. Simulation techniques were applied in combination with vehicle queuing disciplines, and warehouse management theory was incorporated into the research. The research, starting from data from the current process of the case study company, was collected and used to develop a computer simulation model in FlexSim, enabling both problem analysis and the exploration of improvement scenarios. Three queuing discipline scenarios, warehouse management from FSN analysis, and a combination of queuing disciplines with FSN analysis were proposed, resulting in seven improvement scenarios. The simulation results indicated that Queuing Approach 1, which prioritizes six-wheeled vehicles in combination with FSN analysis, was the most appropriate method for process improvement. This approach enhances process efficiency compared with the situation prior to the improvement. The average waiting time for all vehicle types was reduced, and the total number of vehicles exiting the system within the specified monthly period increased from 582 to 658. This increase in vehicle throughput enhances the opportunity to sell more products, resulting in a profit of 14,063,037.11 Baht per month for the case study company.
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