Optimization of cube-per-order index warehouse layouts with zoning constraints
- 1 February 1995
- journal article
- research article
- Published by Taylor & Francis in International Journal of Production Research
- Vol. 33 (2), 465-482
- https://doi.org/10.1080/00207549508930160
Abstract
Zoning constraints impose co-location of the storage addresses assigned to individual items within the same storage area of a warehouse. The cube-per-order index (COI) rule for assigning items to locations cannot guarantee orderpicking cost minimization when zoning constraints are active. A heuristic procedure is presented for using the COI to generate an initial item assignment followed by an improvement step. The improvement step includes a random search phase followed by a simulated annealing step designed to avoid trapping at local minima. The procedure is illustrated in the context of a sample problem with 100 items stored in a facility with 1600 storage addresses distributed among 25 zones. Computational experimentation aimed at developing approximate guidelines for controlling the improvement step are reported.Keywords
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