Analytical models for pick distances in fishbone warehouse based on exact distance contour

Rakesh Venkitasubramony and Gajendra K. Adil

International Journal of Production Research, 2016, vol. 54, issue 14, 4305-4326

Abstract: The pick distance models for a unit load warehouse employing fishbone layout conventionally use semicircular approximation for distance contour which can result in significant error. This paper develops discrete and continuous pick distance models for fishbone layout under random, full turnover, and class-based storage policies based on exact polygonal distance contour. Class-based storage policy with three classes was found to give pick distance comparable to full turnover policy over a range of demand skews and warehouse shapes studied. The discrete and continuous models are compared considering finite storage space, aisle width and discontinues in the ABC curve for a real life data. The sensitivity of warehouse performance over a range of warehouse parameters is studied. We also outline a methodology for class-based storage design where class partitions can be derived for a warehouse of any dimension from the results of a unit area warehouse.

Date: 2016
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DOI: 10.1080/00207543.2016.1148277

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