应急管理中车辆受限的生产_库存及配送整合模型

针对突发事件发生后,救灾物资不足、车辆数量及容量有限的情况,本文考虑了制造商生产、包装新的救灾物资,构造了车辆返回制造商需要等待订单完成生产的时间函数,建立了一个生产、库存及配送整合的混合整数规划模型。该模型由原材料供应商、制造商、配送中心及客户需求点四部分构成,以完成原材料的运输、制造商中的订单生产并运送到需求点及配送中心的库存订单运送到需求点的总花费时间最短为目标。本文将模型分为两层子模型进行求解:第一层模型采用改进的遗传算法求解;第二层模型采用隐枚举法求解。最后给出一个具体的案例以验证模型的合理性及算法的有效性。

An Integrated Model of Production,Inventory and Distribution of Limited Vehicles in Emergency Management

After the disaster, sending the relief supplies to the demand points in the shortest time can avoid many casualties and property losses. In view of the shortage of relief supplies, limited vehicles’ number and capacity, this paper considers the manufacturers’ production and packaging of new relief supplies and constructs a function about the time of the manufacturers’ vehicles waiting for an order completed.Then a mixed integer programming model of integration of production, inventory and distribution is established.The model consists of raw material suppliers, manufacturers, distribution centers and customer demand points. The goal is to complete the transportation of raw material, production and as signment of relief supplies by manufacturers to the customer demand points and ass ignment of relief supplies at distribution centers to the customer demand points in the shortest time. The model is divided into two sub-models. One is solved by improved genetic algorithm and the other implicit enumeration method. Finally, the rationality of the model and effectiveness of the algorithm are verified by one specific case.