A simulation study on re-marshaling operations in a block stacking storage system  

Oleh:

Shin, Eun Joo ; Shi, Jiameng ; Woo, Youn Ju ; Kim, Kap Hwan

Jenis: Article from Proceeding
Dalam koleksi: The 14th Asia Pacific Industrial Engineering and Management Systems Conference (APIEMS), 3-6 December 2013 Cebu, Philippines, page 1-12.
Topik: steel plate storage; simulation; re-handling
Fulltext: 1261.pdf (623.16KB)

Isi artikel

This paper addresses the operation of block stacking storage systems.In order to minimize the number of rehandles during the retrieval operation, the re-marshaling operations are performed. It is assumed that the storage area is segregated into several zones in which each stack has unit loads with a pre-specified range of remaining duration-of-stay (RDOS). This study develops a real time decision rule to determine storage locations ofunit loads in the yard during the storage process and the re-marshaling process. The ruleis used to minimize the total number of handing operations of unit loads while satisfying various constraints on stacking ina storage yard. This study suggests a method for finding an optimal number of stacks of each zone, the priorities among constraints in the decision rule, the priorities among filtering factors, and the value of the empty stack penalty. It is also attempted to optimize RDOSin each zone (stage) to minimize the total expected number of handles. It is shown that the rule is robust even when the arrival pattern and the retrieval times ofplates are uncertain. Numerical experiments by using practical data set are performed to test the validity of the approach in this study.

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