VMI环境下考虑逆向物流的库存发货模型的研究

发布时间：2018-06-19 16:52

本文选题：VMI + 逆向物流　；参考：《福州大学》2014年硕士论文

【摘要】：21世纪,中国经济在飞速发展的同时,也产生了不可估量的逆向物流成本。2013年,中国社会物流总费用占GDP的18%,而逆向物流成本又占物流成本的25%左右。逆向物流成本的重要组成部分是库存成本,在一般性的实体产业中,逆向产品库存成本将占用逆向产品物流成本的40%左右,在汽车、电子产业中其占用比将更高。VMI是近年来比较成熟的库存管理思想,被大量运用到正向物流库存发货模型的研究上,但是这些研究都很少考虑到逆向回流因素的影响。鉴于此,本文在正向物流领域相关研究的基础上,引进逆向回流因素进行库存发货模型的研究。本文在考虑单一产品,且该产品的市场需求服从相互独立的泊松分布,产品回收后可瞬时更新成新产品的基础上,分别构建考虑固定回收和随机回收的两套库存系统。考虑固定回收的系统包含采用基于时间且不允许缺货的库存发货模型和采用即时发货的库存发货模型；考虑随机回收的系统则包含VMI环境下基于时间的逆向物流库存发货模型、VMI环境下基于数量的逆向物流库存发货模型和VMI环境下基于外包策略的混合库存发货模型。本文各个模型都采用统一基础数据,通过数值分析后得出：第一,在假设回流产品具有经济性的条件下,逆向回流因素可有效发挥其替代作用,达到降低平均总成本的目的,同时还可以优化相关最优变量；第二,基于数量的库存发货模型比基于时间的库存发货模型的平均总成本要低,但是随着顾客等待成本的提高,两者差距不断减小。第三,对于混合策略部分,在逆向回流部分进行外包的前提下,由于外包企业的专业性,供应商存在既能满足较高的顾客服务水平又能降低平均总成本的空间；第四,对于基于数量的发货模型和混合策略,最优发货量和最优订货量相等时成本会最低,这时候的逆向回流因素所对应的最优发货周期也最低,原因是当最优发货量等于最优订货量时,会出现一次发货就能满足市场需求的情况,这样将获得最大的规模效益。
[Abstract]:In twenty-first Century, while China's economy developed rapidly, it also produced an inestimable reverse logistics cost in.2013 years. The total cost of China's social logistics accounted for 18% of the GDP, while the reverse logistics cost accounted for about 25% of the logistics cost. The important component of the reverse logistics cost is the inventory cost. In the general entity industry, the reverse product is in stock. This will take up about 40% of the logistics cost of reverse product. In the automobile and electronic industry, the occupying ratio is higher than that of.VMI. It is a more mature inventory management idea in recent years. It is widely used in the study of the forward logistics inventory model, but these studies seldom take into account the influence of reverse backflow factor. In view of this, this paper is in the positive object. On the basis of the flow field related research, the reverse backflow factor is introduced to study the inventory and delivery model. In this paper, a single product is considered, and the market demand of the product follows an independent Poisson distribution. On the basis of the product recovery, two sets of inventory systems with fixed recovery and random recovery are constructed on the basis of the instantaneous renewal of the product. The system that considers fixed recovery includes a time based, no shortage based inventory delivery model and an inventory delivery model with immediate delivery. The system considering the random recovery includes a time based reverse logistics inventory delivery model under the VMI environment, a quantitative reverse logistics inventory delivery model and a VMI ring under the VMI environment. In this paper, a hybrid inventory delivery model based on outsourcing strategy is used in this paper. In this paper, the unified basic data are used in this paper. The first, under the assumption that the reflux product has economic conditions, the reverse backflow factor can effectively play its alternative role to reduce the average total cost, and can also optimize the correlation. The optimal variable; second, the quantity based inventory delivery model is lower than the average total cost of the time based inventory delivery model, but with the increase of the customer's waiting cost, the gap between the two decreases. Third, for the mixed strategy part, the outsourcing enterprise's professionalism, the supplier, under the premise of the reverse backflow part. There is a space that can satisfy both the high customer service level and the average total cost. Fourth, for the quantity based shipping model and the mixed strategy, the cost will be the lowest when the optimal delivery is equal to the optimal order quantity, and the optimal delivery period corresponding to the reverse backflow factor is the lowest, due to the optimal delivery amount and so on. When the optimal order quantity is met, a shipment will meet the market demand, so that the maximum scale benefit will be achieved.
【学位授予单位】：福州大学
【学位级别】：硕士
【学位授予年份】：2014
【分类号】：F274

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