基于3D 打印的备件保障系统可用度模型

针对现阶段我军备件供应保障存在的问题，将3D 打印技术引入备件供应流程，以实现备件不足时的供应保障。建立典型两级备件供应保障结构下的供应流程和保障系统模型，并把可用度作为衡量系统有效性的主要指标。通过比较备件需求与两级库存量之间的不同数量关系，计算初始模型和引入3D 打印技术模型在不同阶段下的备件供应延迟时间，进而计算两模型的可用度以比较模型的有效性。结果表明：引入3D 打印技术模型较初始模型而言具有较高的可用度，可为后续的备件供应保障提供一种新的思路和方法。最后，结合3D 打印技术自身的技术特点，分析了其应用于备件保障的局限性。

Availability Model of Spares Support System Based on 3D Printing

According to the current problems of spares supply support, this paper introduces 3D printing technology to spares supply process so as to meet the needs of inadequate spares support. This paper also builds the supply process and maintenance system model under the structure of two level spares supply support, and see availability as the main indicator to weigh the efficiency of the model. In addition, divide the whole model into several processes and calculate system availability of initial model and the model of applying to the 3D printing technology during different stages by comparing the needs of the spares and two echelon inventory, then calculate the availability to compare the efficiency. Results indicate that the model of applying to the 3D printing technology with higher availability. The application of 3D printing technology provides a new way for support. At last, this paper analyzes the limitation of 3D printing technology according to its characteristic.