Aisle designs in unit-load warehouses with different flow policies of multiple pickup and deposit points

Yeliz Kocaman (), Ömer Öztürkoğlu and Şevkinaz Gümüşoğlu
Additional contact information
Yeliz Kocaman: Yasar University
Ömer Öztürkoğlu: Yasar University
Şevkinaz Gümüşoğlu: Yasar University

Central European Journal of Operations Research, 2021, vol. 29, issue 1, No 15, 323-355

Abstract: Abstract This study focuses on investigating the best layouts of a unit-load warehouse for single-command operation. We propose a model for unit-load warehouses having a single cross aisle and multiple pickup & deposit (P&D) points located at the front side of the warehouse. The model is constructed in continuous space for single-command travel and allows the cross aisle and picking aisles to take any angle between 0 and π. We then search for the best aisle arrangements that minimize the expected single-command distance from a given varying number of P&D points under randomized storage policy. Additionally, we introduce three material flow policies to investigate the effect of usage density of P&D points on the design. We also investigate the effects of shape ratio on angles of aisles in the best designs. Last, we also solved a problem instance with unsymmetrically allocated P&D points to show how to use our proposed models. Therefore, we present that warehouses with width to depth ratio 3:1 are good for high number of P&D points. We also show that the best designs provide more savings in travel over the equivalent traditional design if flows are more concentrated around the central P&D point. The best-found designs also present that the single-command distance can be reduced to 8–20% based on the characteristics of the unit-load warehouse.

Keywords: Aisle design; Single-command; Pick-up and deposit point; Flow policy (search for similar items in EconPapers)
Date: 2021
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Citations: View citations in EconPapers (2)

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DOI: 10.1007/s10100-019-00646-9

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