• 论文 •

### 基于三站点库存组织的备件转运策略分析

1. 1. 北京航空航天大学可靠性与系统工程学院, 北京 100083;
2. 北京航空航天大学 可靠性与环境工程技术国防科技重点实验室, 北京 100083
• 收稿日期:2017-04-06 出版日期:2018-03-20 发布日期:2017-09-18
• 通讯作者: 马麟 E-mail:malin@buaa.edu.cn
• 作者简介:薛佩,女,硕士研究生。主要研究方向:备件库存优化;王乃超,男,博士,讲师,硕士生导师。主要研究方向:装备系统保障效能分析与优化、综合保障工程;马麟,男,博士,副教授,硕士生导师。主要研究方向:系统工程、综合保障工程、维修性工程。

### Spares transshipment strategy analysis based on a three-site inventory system

XUE Pei1,2, WANG Naichao1,2, XIAO Boping1,2, MA Lin1,2

1. 1. School of Reliability and Systems Engineering, Beijing University of Aeronautics and Astronautics, Beijing 100083, China;
2. National Science Key Laboratory of Reliability and Environmental Engineering Technology, Beijing University of Aeronautics and Astronautics, Beijing 100083, China
• Received:2017-04-06 Online:2018-03-20 Published:2017-09-18

Abstract: In this paper, the effect of variant transshipment strategies on expected backorders (EBO) of a three-site inventory system is researched. Based on the predefined assumptions and inventory control strategy, as well as the consumption and replenishment process of the spares, the state equations of spares on hand, spares due in from repair and resupply, and backorders are presented with the consideration of the supply priority among sites. By defining the ratio between EBO and the number of spares due in, the original nonlinear equations can be transformed into linear equations. Since the coefficient matrix of the linear equations is invertible, it can be said that the linear equations has only one solution. As indicated above, a Cauchy sequence of the number of spares due in is constructed to approach the sole solution. Finally, the numerical values of the EBO under two transshipment strategies (fixed probability transshipment and priority preferred transshipment) are compared. The results show that the strategy of priority preferred transshipment can not only increase the utilization rate of spares but also reduce EBO of the system in most cases. In addition, it can be found that the effect of different transshipment strategies on the EBO mainly depends on the feasible space of transshipment strategies, which is mainly determined by the rate of demands filled by local site, the inventory allocation scheme, and the repairing and demanding rate of each site.