Dynamics of assembly production flow
Dynamics of assembly production flow
复制标题
装配生产流程动态
DOI：
10.1016/j.physa.2015.02.005
复制
发表时间：
2015
期刊：
影响因子：
3.3
通讯作者：
D. Yanagisawa and K. Nishinari
中科院分区：
文献类型：
--
作者：
T. Ezaki;D. Yanagisawa and K. Nishinari
尽管管理理论最近取得了发展，但由于生产延迟以及材料供需波动，维持制造计划仍然很困难。制造系统对这种动态行为中断的响应很少被研究。为了捕捉这些反应，我们研究了一个将零件组装成最终产品的过程。完整的组装过程由有向树表示，其中最小的部件在叶子处注入，最终产品在根部移除。由网络上的节点表示的离散装配过程集成零件，然后将其作为单个零件发送到下一个下游节点。该模型表现出一些有趣的现象，包括库存积压级联、供需波动的相变、网络中缺货的非单调分布以及缺货路径和缺货链的形成。令人惊讶的是，这些丰富的现象仅仅是分布式组装过程的本质造成的。从物理角度来看，这些现象提供了对大规模制造系统中的延迟动态和库存分布的洞察。
Despite recent developments in management theory, maintaining a manufacturing schedule remains difficult because of production delays and fluctuations in demand and supply of materials. The response of manufacturing systems to such disruptions to dynamic behavior has been rarely studied. To capture these responses, we investigate a process that models the assembly of parts into end products. The complete assembly process is represented by a directed tree, where the smallest parts are injected at leaves and the end products are removed at the root. A discrete assembly process, represented by a node on the network, integrates parts, which are then sent to the next downstream node as a single part. The model exhibits some intriguing phenomena, including overstock cascade, phase transition in terms of demand and supply fluctuations, nonmonotonic distribution of stockout in the network, and the formation of a stockout path and stockout chains. Surprisingly, these rich phenomena result from only the nature of distributed assembly processes. From a physical perspective, these phenomena provide insight into delay dynamics and inventory distributions in large-scale manufacturing systems.