Abstract
Objective: The paper presents a study on parallel CONWIP systems based on two case studies benchmarked against CONWIP and push. The performance measures are flow time and work-in-process (WIP) level.Methodology: A discrete event simulation model was constructed and was used to run experiments for individual production controls. The gathered data were analyzed through response surface methodology.Results: In case study 1, the parallel CONWIP with FIFO dispatch rule is superior at both flow time and WIP level. In case study 2, push, CONWIP, and parallel CONWIP with LH dispatch rule to be considered superior at both flow time and WIP level.Conclusion: One notable advantage of parallel CONWIP systems is the ability of the card count to respond to changes in the demand for product classes. Several future research directions are proposed, such as framework of dynamic card controlling, and implementation of parallel CONWIP aligned with lean practices.
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