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针对现阶段军备件供应保障中存在的备件短缺或浪费等问题,结合3D打印技术的优势,建立3D打印技术与备件保障的关联性,将其引入到备件供应保障流程中。根据排队理论,定义了经典和引入3D打印的备件供应保障系统的排队过程和维修过程,建立相应的备件保障排队问题的随机Petri网模型,并将简化随机Petri网模型等价于排队过程。采用故障到达率和广义修复率计算排队系统的运行指标,并将其作为评价依据,运用实例仿真对两种模型的系统性能进行分析评价,验证了3D打印技术的可行性。结果表明,3D打印技术的引用可以改善保障系统时间性能。最后进行灵敏度分析,通过参数的变化寻求系统性能的变化规律,表明引入3D打印技术后保障系统具有更强的战场适用性。
In the light of the shortage of spare parts or waste in the supply of armament supplies at the present stage, the 3D printing technology and the support of spare parts are established by combining the advantages of 3D printing technology and introduced into the spare parts supply guarantee process. According to the queuing theory, the queuing process and maintenance process of the classic and 3D printed parts supply security system are defined, and the corresponding stochastic Petri nets model of the spare parts protection queuing problem is established. The simplified stochastic Petri nets model is equivalent to the queuing process. The running indexes of queuing system are calculated by fault arrival rate and generalized repair rate, which are used as the basis of evaluation. The performance of the two models is analyzed and evaluated by case simulation. The feasibility of 3D printing technology is verified. The results show that the reference to 3D printing technology can improve the system time performance. Finally, the sensitivity analysis is carried out to find out the variation rule of the system performance through the change of the parameters, which shows that the introduction of 3D printing technology ensures the system has stronger battlefield suitability.