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McGinnis, Leon F.

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Author: Barenji, Ali ×

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    Kit Fulfillment Centers Serving Distributed Small-Series Assembly Centers in Hyperconnected Supply Chain Networks
    (Georgia Institute of Technology, 2023-06) Li, Mingze ; Campos, Miguel ; Barenji, Ali ; McGinnis, Leon F. ; Montreuil, Benoit
    In the context of Physical Internet (π, PI) enabled hyperconnected supply chain networks, we focus on the design and performance assessment of π-enabled kit fulfillment centers (KFCs) distributed over a territory to concurrently feed multiple agile assembly centers (AACs) in their region. The AAC production is often associated with the realization of major projects for which short product runs are needed. The KFCs are designed to produce multi-level modular container kits (Montreuil et al., 2015). The multi-level kits of the KFCs have 4 levels, task, skill, workstation, and product. The kit assembly processes are categorized into A, B, and C, according to the shape, weight, and size of their parts. The resource balancing and scheduling is done using a mixed integer programming model, whose performance is validated with a comparison experiment using synthetic data for automobile manufacturing. The process design reduces intermediate inventory space between levels of kit production to encourage space efficiency. The modular design of kitting cells enables easy and quick reconfiguration under variable demand. The multi-level modular container kits allow easy and smart transportation in the hyperconnected supply chain network and handling at AACs.
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    Modular and Mobile Design of Hyperconnected Parcel Logistics Hub
    (Georgia Institute of Technology, 2021-06) Babalou, Sevda ; Bao, Wencang ; Montreuil, Benoit ; McGinnis, Leon F. ; Buckley, Shannon ; Barenji, Ali
    This paper employs modularity and mobility (M2) for designing recently introduced hyperconnected logistics hubs (HLH) for the Physical Internet, where parcels are encapsulated in modular tote-sized containers arriving in mobile racks, and these totes are consolidated by switching totes in shuffling cells to mobile racks with other totes with shared next destinations. The paper introduces the M2 framework and its modular standard-sized cells, racks and tote containers. Building on the overall HLH concept, the proposed M2 hub design is a major step forward with its on-the-fly transformability through operations to adapt to the dynamically changing sizes, mixes, characteristics, and flow of modular containers entering the hub and being consolidated and shipped within a short dwell time target. The paper uses a detailed case study to demonstrate the induced adaptability, adjustability, agility, efficiency, resilience, and scalability, and then it reports on an exploratory simulation experiment contrasting the performance of M2designs
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    Digital Twin Design Requirements for Durable Goods Distribution in Physical Internet
    (Georgia Institute of Technology, 2021-06) Campos, Miguel ; Derhami, Shahab ; McGinnis, Leon F. ; Montreuil, Benoit ; Barenji, Ali
    Today the practice for distributing large products manufactured at few original equipment manufacturers (OEMs) consists of a dedicated Point-to-Point (PtP) logistics system, typically requiring long haul transport from the factory to the wholesale destination. A growing problem is the shortage of commercial drivers willing to be away from home for several days to move products cross-country. Hub relay network logistics systems are an alternative solution to P2P logistics systems that allow reducing drivers' away-from-home times. Operating a relay-based logistics system requires accounting for multiple interrelated operational decisions that become more complicated as the system becomes larger and encompasses more players. To deal with such complexity we propose utilizing a digital twin of the distribution and logistics system as a decision-making support tool to manage the system and make operational decisions efficiently. This paper explores the design and assessment of a hyperconnected relay network of transport hubs supporting the movement of durable goods from factory to wholesale destinations. It describes requirements and challenges in developing and implementing a digital twin for such systems.