Browsing by Subject "Capacity planning"

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    ItemOpen Access
    An application of Silver Meal Heuristic to MRP lot sizing decisions at Turk Traktor Fabrikasi
    (1995) Esmer, Berkhan N.
    MRP does not consider setup and inventory holding costs for lot sizing but very quick algorithms like Silver-Meal can be used for lot sizing decisions. A module to apply Silver-Meal Heuristic to manufacturing work order releases at Türk Traktör Fabrikasy, Ankara, Turkey is designed and tested for 3 months. The module processes demand for finished goods, determines lot sizes, checks capacities by loading machines according to the schedule and reports the setup, inventory holding and overtime costs. These cost figures are compared with the MRP lot sizes. It is observed that, the planning time decreased by 90% by designing module in PCs connected to the main databases, and the total costs decreased by 50%.
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    ItemOpen Access
    A multi-family dynamic lot sizing problem with coordinated replenishments: a heuristic procedure
    (Taylor & Francis, 1993) Mercan, H. M.; Erenguc, S. S.
    Consider a manufacturing environment where multiple items are produced. These products are grouped into families due to their similarities in design and manufacturing. It pays off to coordinate the manufacture of products in a given family because preparing the facility for producing a family of products involves a major family setup. In addition each individual product in a given family may require a relatively minor setup. The objective is to determine the product lot sizes, over a finite planning horizon, that will minimize the total relevant cost, subject to demand and capacity constraints. In this paper we present an effective heuristic procedure for this problem. Computational results for the heuristic procedure are also reported. Our computational experience leads us to conclude that the heuristic procedure may be of considerable value as a decision making aid to production planners in a real-world setting.