Journal
INTERNATIONAL JOURNAL OF PRODUCTION RESEARCH
Volume 59, Issue 22, Pages 6898-6918Publisher
TAYLOR & FRANCIS LTD
DOI: 10.1080/00207543.2020.1829148
Keywords
Disassembly lot-sizing problem; inventory management; disposal; mixed-integer programming; heuristics; valid inequalities
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Funding
- European Regional Development Fund (FEDER)
- Departmental Council of Aube [CD10]
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This paper addresses the problem of disassembly lot-sizing for the single-product type, proposing three new MIP formulations and investigating two efficient heuristics for real-case applications. The research highlights the relevance of disposal decisions in disassembly lot-sizing models for saving inventory costs.
This paper addresses the problem of disassembly lot-sizing for the single-product type. Due to some specific characteristics of disassembly systems, surplus inventory can be generated while satisfying the demand for the components. Disposal decisions are considered here to avoid inventory accumulations throughout the planning horizon. Three new mixed-integer programming (MIP) formulations are proposed to model the problem. The formulations differ from each other concerning the quality of the lower bound provided by their linear relaxation, which is an important issue in MIP resolution methods. Two efficient heuristics are also investigated for real-case applications when MIP algorithms are not relevant. The three formulations and the performance of the heuristics are compared based on new randomly generated instances for disassembly lot-sizing problems. As a managerial insight, the disposal decisions in disassembly lot-sizing models are relevant to save inventory costs.
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