Abstract Facility layout problems focus on the assignment of departments into the facility layout by considering the minimization of total costs. A well-designed facility result in efficient material flows in transportation. For this reason, the problem should be considered with the changes in demands that cause different material flows between departments. While the aim of the static facility layout problem is to obtain the optimal facility layout, the dynamic facility layout problem includes the multi-periods dealing with the changes in material flows between departments. Furthermore, the material handling devices may affect the facility layout decisions although it is omitted in general. In this study, three different facility layout problems concern static, dynamic and flexible bay structure and material handling device assignment problems are considered simultaneously. Three mixed integer programming models are proposed for the addressed problems with integrated decisions. The proposed models are compared with a two-stage approach composed of solving the classical facility layout problems first, then solving material handling devices assignment problems. The comparative results show that the integrated decision affects the facility layout and decreases the total costs. Eleven test instances are considered and the integrated model provides cost efficiency for these test instances.

中文翻译：

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物料搬运设备分配和设施布局问题的整合

摘要 设施布局问题集中在考虑总成本最小化的设施布局中部门的分配。精心设计的设施可在运输中实现高效的物料流动。为此，应考虑需求变化导致部门间物料流动不同的问题。静态设施布局问题的目的是获得最优的设施布局，而动态设施布局问题则包括处理部门间物流变化的多周期问题。此外，材料处理设备可能会影响设施布局决策，尽管它通常被省略。在这项研究中，三个不同的设施布局问题涉及静态、同时考虑动态和灵活的隔间结构和物料搬运设备分配问题。针对具有综合决策的解决问题，提出了三种混合整数规划模型。将所提出的模型与首先解决经典设施布局问题，然后解决物料搬运设备分配问题的两阶段方法进行比较。对比结果表明，综合决策影响了设施布局，降低了总成本。考虑了 11 个测试实例，集成模型为这些测试实例提供了成本效益。将所提出的模型与首先解决经典设施布局问题，然后解决物料搬运设备分配问题的两阶段方法进行比较。对比结果表明，综合决策影响了设施布局，降低了总成本。考虑了 11 个测试实例，集成模型为这些测试实例提供了成本效益。将所提出的模型与首先解决经典设施布局问题，然后解决物料搬运设备分配问题的两阶段方法进行比较。对比结果表明，综合决策影响了设施布局，降低了总成本。考虑了 11 个测试实例，集成模型为这些测试实例提供了成本效益。