A class-based storage warehouse design using a particle swarm optimisation algorithm Online publication date: Sun, 11-Jan-2015
by Natanaree Sooksaksun; Voratas Kachitvichyanukul; Dah-Chuan Gong
International Journal of Operational Research (IJOR), Vol. 13, No. 2, 2012
Abstract: Classical warehouse design is commonly done in two steps by first determining the aisle layout and dimension followed by the assignment of items to storage. The design process is performed iteratively until a design with appropriate performance criterion is found. This paper proposes an approach for warehouse design in one step by determining the aisle layout and dimension while simultaneously assigning shelf spaces for storing the items based on item classes. A mathematical model is formulated to determine the number of aisles, the length of aisle and the length of each pick aisle to allocate to each product class that will minimise the average travel distance for a warehouse that operates under a class-based storage policy. A particle swarm optimisation algorithm was developed to determine the optimal warehouse design. The proposed method not only accomplishes the task in one step but also can identify multiple alternative designs. A case study is used to illustrate the proposed algorithm.
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