Job shop configuration optimization at Tinker Air Force Base
Article Abstract:
This paper discusses a large simulation model that was developed to aid the reconstruction efforts after a disastrous fire at Tinker Air Force Base. The model, developed in SLAM, facilitated the analysis and efficient design of the functional layout that replaced the previous machine-based layout in the appropriate number of machines to place within a modular repair center (MRC), stacker capacity for in-process inventory, location of elevators for sending parts to the conveyor, and the optimal design and routing scheme for overhead conveyor system. The new layout, as predicted by the simulation model, has proven to be quite effective compared with the pre-fire layout. Improvements that have been achieved include a 50 to 80% decrease in material handling, substantive decrease in flow times, better management control of part transfers, $4.3 million savings from the elimination of excess capacity, and $1.8 million savings resulting from higher direct labor efficiency. (Reprinted by permission of the publisher.)
Publication Name: SIMULATION
Subject: Engineering and manufacturing industries
ISSN: 0037-5497
Year: 1990
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An improved simulation model for cannibalization policy performance comparisons in a complex maintenance system
Article Abstract:
A model of a two-echelon (bases and a depot), two indenture (machines have components which may have modules) maintenance system with spares, repair, cannibalization, preventive maintenance, and two classes of manpower constraints is presented. A base is modeled with a SLAM II combined network and discrete event simulation, while other bases and a depot are incorporated analytically. Although designed primarily for the study of cannibalization decisions, the model is also suitable for testing the performance of repair, spares, and other maintenance policies in complex systems, including those maintaining fleets of aircraft. Applicability of the model and its new features are demonstrated by showing how previously-reported results change under different assumptions. (Reprinted by permission of the publisher.)
Publication Name: SIMULATION
Subject: Engineering and manufacturing industries
ISSN: 0037-5497
Year: 1989
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The Rotation and Assignment of Imbalanced Air Force Specialties: A Policy Analysis Model
Article Abstract:
A dynamic model of a complex multi-echelon personnel system is presented in this paper. The system manages U.S. Air Force airman assignments in critical specialties. Some of these specialties are imbalanced with more personnel required overseas than can be supplied and still allow airmen sufficient tour length assignments in the continental United States. The model deals with inputs and outputs of personnel at the organizational level and provides a mechanism for testing the effects of alternative policies on system performance. A discussion of the advantages of the methodology over other techniques for this type of analysis is included. (Reprinted by Permission of Publisher.)
Publication Name: SIMULATION
Subject: Engineering and manufacturing industries
ISSN: 0037-5497
Year: 1984
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