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Concurrent Multiscale Modeling of Embedded Nanomechanics

Published online by Cambridge University Press:  21 March 2011

Robert E. Rudd
Robert E. Rudd*
Affiliation:
Lawrence Livermore National Laboratory Condensed Matter Physics, L-415 Livermore, CA 94551, USA
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Abstract

We discuss concurrent multiscale simulations of dynamic and temperature-dependent processes found in nanomechanical systems coupled to larger scale surroundings. We focus on the behavior of sub-micron Micro-Electro-Mechanical Systems (MEMS), especially micro-resonators. The coupling of length scales methodology we have developed for MEMS employs an atomistic description of small but key regions of the system, consisting of millions of atoms, coupled concurrently to a finite element model of the periphery. The result is a model that accurately describes the behavior of the mechanical components of MEMS down to the atomic scale. This paper reviews some of the general issues involved in concurrent multiscale simulation, extends the methodology to metallic systems and describes how it has been used to identify atomistic effects in sub-micron resonators.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 677: Symposium AA – Advances in Materials Theory and Modeling–Bridging Over Multiple-Length and Time Scales , 2001 , AA1.6
Copyright
Copyright © Materials Research Society 2001

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