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Acta Armamentarii ›› 2015, Vol. 36 ›› Issue (7): 1334-1339.doi: 10.3969/j.issn.1000-1093.2015.07.024

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Research on Two-echelon Spare Parts Inventory Systems with Lateral Transshipments

LIU Shao-wei1, GUAN Jiao2, WANG Jie1, SHU Tao1, FENG Gang1   

  1. (1.Missile Institute, Air Force Engineer University, Xi’an 710051, Shaanxi, China;2.Telecommunication Engineer Institute, Air Force Engineer University, Xi’an 710077, Shaanxi, China)
  • Received:2014-10-15 Revised:2014-10-15 Online:2015-09-21
  • Contact: LIU Shao-wei E-mail:lsw3721@163.com

Abstract: Multi-echelon spare parts inventory systems with lateral transshipments make the traditional tree-like supply mode become a flat structure, which can shorten the average waiting time of spare parts. The multi-echelon spare parts inventory system is analyzed to build a multi-echelon spare parts inventory model with lateral transshipments, and the related important parameters, including spare fill rate, lateral transshipment probability and probability of shortage, are evaluated based on M/M/∞ queue model. A heuristic algorithm is used to minimize system-wide spare parts. The experiment shows that the two-echelon support cost with lateral supply can be reduced by 39.4% by introducing the lateral supply strategy.

Key words: operations research, repairable spare part, lateral transshipment, two echelon inventory system

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