A System-of-Systems Approach to the Strategic Feasibility of Modular Vehicle Fleets

Bayrak, Alparslan Emrah; Egilmez, M. Mert; Kuang, Heng; Li, Xingyu; Park, Jong Min; Umpfenbach, Edward; Anderson, Erik; Gorsich, David; Hu, Jiantao; Papalambros, Panos Y.; Epureanu, Bogdan I.

doi:10.1109/tsmc.2018.2827387

Cited by 5 publications

(7 citation statements)

References 26 publications

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“…The fleet operation model used is modified from that of Bayrak et al 14 with a focus on multiple mission scenarios, as shown in Figure 1. We summarize important elements of the operation model in this section.…”

Section: Fleet Operation Modelmentioning

confidence: 99%

“…Following Bayrak et al, 14 the number of spare parts and vehicles needed for the conventional fleet at time t n can be estimated with the formulation:…”

Section: Fleet Operation Modelmentioning

confidence: 99%

“…13,14 Such studies investigate the impact of fleet-level modularity on the acquisition and operation cost for a given mission scenario. Although the advantages and disadvantages of modularity over conventional approaches, in terms of cost saving and personnel requirements, were shown by Bayrak et al 14 , a fleet-level adaptability analysis is still lacking. Another study examines the adaptability of military air mobility fleets, 15 but focuses only on conventional fleets.…”

Section: Introductionmentioning

confidence: 99%

“…Following the study of Bayrak et al, 14 a ''plug and play'' type of modularity is adopted in this paper assuming technical feasibility is given. This study uses a fleet simulation model named Modular Vehicle Fleet Simulation (MARVEL), developed as a collaborative effort between the US Army Tank Automotive Research Development and Engineering Center (TARDEC), and the Automotive Research Center at the University of Michigan.…”

Section: Introductionmentioning

confidence: 99%

“…The primary contribution of this paper is a method to quantify the adaptability of vehicle fleets to changing operation scenario characteristics. Study suggests that modularity can improve the adaptability of vehicle fleets, 14 but does not provide a formal way to evaluate adaptability, as it investigates only a single scenario with fixed parameters. Another study demonstrated a preliminary approach, 26 while the current paper formalizes and extends the approach for evaluating fleet adaptability.…”

Section: Introductionmentioning

confidence: 99%

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Adaptability of modular vehicle fleets to changing supply route characteristics

Egilmez

Park

Bayrak

et al. 2019

Journal of Defense Modeling & Simulation

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Modularity in vehicle systems can reduce total lifecycle cost and improve adaptability for ground military fleets. This paper quantifies the adaptability of vehicle fleets to changes in supply route characteristics defined by route distance, threat level, and damage probability. Each characteristic is discretized into three levels, and the adaptability analysis is performed over 27 scenarios with significantly different characteristics. Fleet adaptability is measured in terms of two fleet-level metrics, namely the total fleet mass (which is correlated to the total cost) and the personnel requirements. Results show that modularity improves adaptability in terms of total fleet mass compared with a conventional approach, while providing a comparable adaptability in terms of personnel requirements. A sensitivity analysis is also performed on module characteristics of the modular fleet. This analysis shows that changes in relatively small parts of the system can change the values of performance metrics substantially.

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Section: Fleet Operation Modelmentioning

confidence: 99%

“…Following Bayrak et al, 14 the number of spare parts and vehicles needed for the conventional fleet at time t n can be estimated with the formulation:…”

Section: Fleet Operation Modelmentioning

confidence: 99%