Single-site strategic capacity planning considering renewal, maintenance, inventory, taxes and cash flow management
提出一个混合整数线性规划模型，用于单站点制造系统的战略产能规划，涵盖产能扩张、缩减、更新及仓储决策，并整合维护成本、需求季节性、现金流和税收等因素，以最大化规划期末的税后现金余额。
This paper deals with strategic capacity planning of a single-site manufacturing system. We propose a MILP model that includes relevant business aspects and possibilities, some of which are only partially or not at all found in the literature. Specifically, we consider decisions on expansion, reduction and renewal of production capacity, and acquisition of storage capacity. In addition, we model aspects such as (a) maintenance costs and unit variable costs depending, respectively, on age and characteristics of facilities, (b) seasonality of the demand and (c) cash flow management, including taxes and, therefore, depreciation of assets. The model maximises the after-tax cash balance at the end of the planning horizon. We also present a computational experiment with 54 instances to show that the model can be solved for a wide range of sizes in a reasonable computing time using comercial software.