Freezing the master production schedule in multilevel material requirements planning systems under deterministic demand
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AbstractThis paper extends the studies by Sridharan, Berry, and Udayabhanu from single-level MPS systems to multilevel material requirements planning (MRP) systems, and examines the impact of product structure, lot-sizing rules and cost parameters upon the selection of MPS freezing parameters under deterministic demand. A model is built to simulate the master production scheduling and material requirements planning operations in a make-to-order environment. The results show that all the MPS freezing parameters studied have a significant impact upon total inventory costs and schedule instability in multilevel MRP systems. First, the order-based freezing method is preferable to the period-based method. Secondly, the study finds that increasing the freezing proportion reduces both total inventory costs and schedule instability. This finding contradicts the finding by Sridharan et al. in single-level systems. Thirdly, the study finds that a higher replanning periodicity results in both lower total inventory cost and lower schedule instability. The study also indicates that the product structure and lot-sizing rules do not significantly influence the selection of MPS freezing parameters in a practical sense under most situations. However, the cost parameter seems to significantly influence the selection of replanning periodicity.
All Author(s) ListZhao X, Lee TS
Journal nameProduction Planning and Control
Volume Number7
Issue Number2
Pages144 - 161
LanguagesEnglish-United Kingdom
Keywordsmanufacturing planning and control; master production scheduling; material requirements planning; simulation
Web of Science Subject CategoriesEngineering; Engineering, Industrial; ENGINEERING, INDUSTRIAL; Engineering, Manufacturing; ENGINEERING, MANUFACTURING; Operations Research & Management Science; OPERATIONS RESEARCH & MANAGEMENT SCIENCE

Last updated on 2020-31-05 at 03:02