Original Date: 01/23/1995
Revision Date: 01/18/2007
Best Practice : Structural Dynamics and Vibrational Control
Sandia National Laboratories (SNL) performs computational and experimental structural dynamics analyses including optimization, structural system identification, vibration/chatter control, and smart structures and materials. State-of- the-art computational analyses and control of structural vibrations represent the hallmark of this process at Sandia.
Computational structural dynamics involves the development of finite element or boundary element models of structures and systems and their use for design verification, analyses, and design optimization. Structural system identification encompasses the process of integrating analytical and experimental structural dynamics techniques which can lead to automated methods for calibrating structural dynamics models with measured data as well as the ability to account for uncertainties in both the data and modeling parameters.
Sandia also is developing structures and materials that respond to internal and external stimulation through sensing, actuating, processing, and control. These lightweight, "smart" material systems can replace bulky mechanical devices in some applications and perform more reliably over a longer period of time with lower maintenance.
Sandia's work on smart structures and materials for weapons and space programs is being applied to commercial applications in manufacturing, microelectronics, and transportation. For example, SNL is working with analyses of flexible robotic arms and assemblies, precision lithography machines, machine tools for chatter suppression, and collaborating with the automotive industry on better design and analysis methods. Sandia's efforts have led to enhanced quality, more accurate, and faster manufacturing processes. Information and assistance in these areas are available to small and large businesses through a National Machine Tool Partnership and through the laboratories' Technical Information Environment - for Industry computer network accessed through the Internet World Wide Web.
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