THE DEVELOPMENT OF A MATHEMATICAL-MODEL OF THE OPERATIONS OF A NATIONAL GLASS MANUFACTURER

In this paper, a mathematical model of the entire operations of a nati onal glass manufacturer is developed. This includes the float glass ma nufacture, distribution, storage operations and the technical consider ations dictated by the plant as well as the operating procedures. The model is initially for a planning year, and is generated from a 'month ly model'. This monthly model interconnects with other monthly models primarily via stock flows. The mathematical model is formulated in a u nique way that allows certain production aspects to be modelled using a 'pseudo-continuous' time frame, rather than a discrete one. The gene ration of the overall model (as a mixed integer linear programming pro blem) and its solution is also discussed.