Two federally funded projects from the Federal Railroad Administration (FRA) and the U.S. Army Research Office (ARO) of the amount $3,012,059 were received to support research in the area of large scale computations. The titles and brief descriptions of these two projects are as follows:

Enhancement and Development of Railroad Vehicle Dynamics Simulation Capabilities Federal Railroad Administration, 2006-2011.

This is a second phase of a research project supported by the Federal Railroad Administration (FRA) to develop and enhance comprehensive computational algorithms and capabilities for the nonlinear dynamic simulations of large scale high speed railroad vehicle systems. The goal of this research project is to provide FRA and the railroad industry with new capabilities for accurate prediction of the nonlinear dynamics behavior, vehicle critical speeds, vibration characteristics, and derailment and accident scenarios for high speed rail systems subjected to different dynamic loading conditions and disturbances.

Integration of Large Deformation Finite Element Formulations in Flexible Multibody System Algorithms U.S. Army Research Office, 2006-2009.

This project deals with the new and challenging problem of implementing large deformation finite element formulations in flexible multi-body system algorithms. Successful integration of large deformation and multi-body system formulations will lead to a new generation of simulation codes that can be used in the analysis, design and performance evaluation of many mechanical and aerospace systems. Examples of analysis and design problems that can be systematically solved using the proposed new computational algorithms are crashworthiness; problems of cables used in pantograph/catenary systems, rescue operations and heavy load handling; cloth and parachute models; very flexible robots and mechanisms; belt drives; leaf springs; tire deformations; large deformation of high-speed rotors, stability problems, among many others.


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Raymond Matthes

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