Automotive Research Center
Automotive Research Center
A U.S. Army Center of Excellence for Modeling & Simulation of Ground Vehicles
Led by the University of Michigan

Multilevel Vehicle Design: Fuel Economy, Mobility, and Safety Considerations

Work began in 2006 and was completed in 2012.

Virtual drop test simulating underbody blast eventArmy vehicles are designed for multiple objectives including performance, reliability, maintainability, and survivability while considering a wide range of operating environments. Design requirements for increased energy efficiency, including alternative powertrain configurations, must be carefully balanced with those for survivability. Initial research has led to robust, novel decomposition-based methodologies for hierarchical, multilevel vehicle design optimization. These methodologies were integrated with reliability and design under uncertainty considerations. A significant enhancement of these results can be achieved if we also account for the actual physical geometry of the different designs, i.e., three-dimensional representation of the components comprising the vehicle and their impact on various attributes. The first objective of this research integrated geometry representation into optimal design methodologies in order to account for geometry-related attributes and quantify interactions with functional vehicle design requirements. This objective required the development of techniques for reduced representation of infinite-dimensional quantities (such as vector-valued coupling variables) and algorithms for making design decisions with respect to quantitative design objectives such as maintenance. The second objective extended the multilevel design framework to predict the impact of unexpected events (e.g., blasts or accidents) to vehicle designs and assess effects on soldier safety. In particular, the relation between vehicle mass, shape and safety was investigated and modeled.

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Sponsored by U.S. Army CCDC Ground Vehicle Systems Center
Cooperative Agreement W56HZV-19-2-0001

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