Modeling of induced strain actuation of shell structures

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dc.contributorVirginia Tech. Center for Intelligent Material Systems and Structuresen
dc.contributor.authorChaudhry, Zaffiren
dc.contributor.authorLalande, Fredericen
dc.contributor.authorRogers, Craig A.en
dc.contributor.departmentCenter for Intelligent Material Systems and Structures (CIMSS)en
dc.date.accessed2015-05-12en
dc.date.accessioned2015-05-14T14:51:12Zen
dc.date.available2015-05-14T14:51:12Zen
dc.date.issued1995-05-01en
dc.description.abstractBased on the thin-shell Donnell theory, a model to represent the action of discrete induced strain actuator patches symmetrically bonded to the surface of a circular cylindrical shell has been developed. The model provides estimates of the bending curvatures due to the out-of-phase actuation and the in-plane strains due to the in-phase actuation of the bonded actuator patches. The magnitudes of the induced curvature and the in-plane strain are found to be identical to those of plates; however, due to the strain-displacement relations in cylindrical coordinates, the in-plane and out-of-plane displacements are coupled. Expressions for the equivalent forces and moments that represent the action of the actuator patches have been developed. Due to the curvature of the shell, the representation of the in-phase actuation with an equivalent in-plane line force applied along the edge of the actuator results in the application of erroneous rigid-body transverse forces. To avoid these rigid body forces, a method to represent the in-phase actuation with a system of self-equilibrating forces is proposed. The action of the actuator is then represented by an equivalent in-plane force and a transverse distributed pressure applied in the region of the actuator patch. Finite element verification of the proposed model is presented. The displacements due to the actual actuator actuation are compared with the proposed model, and very good agreement is found. Copyright 1995 Acoustical Society of Americaen
dc.description.sponsorshipUnited States. Office of Naval Research - Grant No. ONR-N00014-92-J-1170en
dc.format.extent6 pagesen
dc.format.mimetypeapplication/pdfen
dc.identifier.citationChaudhry, Z., Lalande, F., & Rogers, C. A. (1995). Modeling of induced strain actuation of shell structures. Journal of the Acoustical Society of America, 97(5), 2872-2877. doi: 10.1121/1.411853en
dc.identifier.doihttps://doi.org/10.1121/1.411853en
dc.identifier.issn0001-4966en
dc.identifier.urihttp://hdl.handle.net/10919/52278en
dc.identifier.urlhttp://scitation.aip.org/content/asa/journal/jasa/97/5/10.1121/1.411853en
dc.language.isoen_USen
dc.publisherAcoustical Society of Americaen
dc.rightsIn Copyrighten
dc.rights.urihttp://rightsstatements.org/vocab/InC/1.0/en
dc.subjectShell modelen
dc.subjectBendingen
dc.subjectFinite element methodsen
dc.subjectSurface strainsen
dc.subjectSurface structureen
dc.titleModeling of induced strain actuation of shell structuresen
dc.title.serialJournal of the Acoustical Society of Americaen
dc.typeArticle - Refereeden
dc.type.dcmitypeTexten

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