Efficiency in shortage reduction when using a more expensive common component

Efficiency in shortage reduction when using a more expensive common component

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Article ID: iaor20042950
Country: United Kingdom
Volume: 31
Issue: 1
Start Page Number: 123
End Page Number: 138
Publication Date: Jan 2004
Journal: Computers and Operations Research
Authors: , ,
Abstract:

The paper considers the contribution of a common component in minimizing the expected units shortage subject to a budget constraint. A two-level product structure in an assemble-to-order system, where demands for two end products follow independent Erlang distributions, is assumed. We present closed form expressions for the objective function under various and provide efficient algorithms to compute the corresponding optimal inventory stock levels. It is found that, for all demand patterns considered, the relative reduction in the expected units shortage can be substantial when the inventory budget is large unless the cost of the common component is very high. When the budget is small, any potential benefit from employing commonality can be significant even if the premium for the common component is tiny.

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