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Multiphysic topology optimization of electromechanical microdevices considering pull-in voltage using an electrostatic force filter
Lemaire, Etienne; Duysinx, Pierre; Rochus, Véronique
2009In Proceeding of the 8th World Congress on Structural and Multidisciplinary Optimization
 

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Keywords :
Topology optimization; Multiphysic modeling; Electromechanical microsystems; Pull-in effect
Abstract :
[en] Electrostatic actuation is often used in microsystems as it is relatively easy to implement and provides a short response time. However, because of the non-linearity of electrostatic forces, these devices may suffer from an unstable behavior called pull-in effect. Previous work of the authors intended to delay pull-in effect by maximizing pull-in voltage studying a simplified problem where the optimization domain was purely mechanical. The present paper generalizes the approach by considering a multiphysic optimization domain. However, the generalization of the optimization problem is not straightforward as local pull-in modes appear after a few optimization iterations. Therefore, the paper investigates several solutions to prevent the appearance of local pull-in modes.
Disciplines :
Mechanical engineering
Author, co-author :
Lemaire, Etienne ;  Université de Liège - ULiège > Département d'aérospatiale et mécanique > Conception géométrique assistée par ordinateur
Duysinx, Pierre  ;  Université de Liège - ULiège > Département d'aérospatiale et mécanique > Ingénierie des véhicules terrestres
Rochus, Véronique ;  Université de Liège - ULiège > Département d'aérospatiale et mécanique > LTAS - Vibrations et identification des structures
Language :
English
Title :
Multiphysic topology optimization of electromechanical microdevices considering pull-in voltage using an electrostatic force filter
Publication date :
2009
Event name :
8th World Congress on Structural and Multidisciplinary Optimization
Event organizer :
ISSMO Int . Society for Structural and Multidisciplinary Optimization
Event place :
Lisbon, Portugal
Event date :
du 1 juin 2009 au 5 juin 2009
Audience :
International
Main work title :
Proceeding of the 8th World Congress on Structural and Multidisciplinary Optimization
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since 11 July 2009

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