部分共享下航空企业周转件两级库存配置研究

Research on Two level Inventory Configuration of Turnover Parts inAviation Enterprises under Partial Sharing

针对周转件的部分共享两级配置问题,将部分共享与库存配置模型相结合,提出了部分共享下周转件两级库存配置模型。企业组建本地级和共享级进行优先级保障,并构建部分共享转运流程。通过马尔可夫分析两级的需求关系和在库库存的状态转移,建立了基于稳态概率的两级库存转运模型。在此模型基础上,结合备件保障成本构成分析,建立以服务水平为约束的部分共享转运成本模型。运用粒子群算法求解部分共享模型下的两级库存配置和系统总成本。通过算例计算,将得到的结果与相同保障率下的独立保障模型进行对比,表明部分共享的两级配置模型能够使系统总成本和库存量显著减少,为制定合理的备件配置方案提供决策依据。

To address the issue of partial sharing two level configuration considering turnover parts,a partial sharing two level inventory configuration model is proposed by combining partial sharing with inventory configuration model.Firstly,the enterprise establishes local and shared levels for priority protection,and constructs partial shared transportation processes.Secondly,a two level inventory transfer model based on steady state probability was established through Markov analysis of the demand relationship between the two levels and the state transition of inventory in stock.Based on this model,combined with the analysis of spare parts guarantee cost composition,a partial shared transportation cost model with service level constraints is established.Then,particle swarm optimization algorithm is used to solve the two level inventory configuration and total system cost under the partial sharing model.Finally,through an example calculation,the obtained results are compared with independent support models under the same guarantee rate,indicating that the partially shared two level configuration model can significantly reduce the total cost and inventory of the system,providing a decision making basis for formulating a reasonable spare parts configuration plan.