This Article Full Text (PDF) References Alert me when this article is cited Alert me if a correction is posted Services Email this article to a friend Similar articles in this journal Alert me to new issues of the journal Add to Saved Citations Download to citation manager Request Permissions Request Reprints Add to My Marked Citations Citing Articles Citing Articles via HighWire Citing Articles via Google Scholar Citing Articles via Scopus Google Scholar Articles by Lalande, F. Articles by Rogers, C. A. Search for Related Content Social Bookmarking                         What's this?

Comparison of Different Impedance-Based Models for Out-of-Phase Actuation of Actuators Bonded on Ring Structures

Zaffir Chaudhry

Craig A. Rogers

Center for Intelligent Material Systems and Structures, Virginia Polytechnic Institute and State University, Blacksburg, VA 24061-0261

Two different impedance models representing out-of-phase actuation of induced strain actuators bonded to the surface of a circular ring are compared. The first impedance model derivation is based on the use of eigenfunctions to determine the structural impedance of the ring, while the second model is based on modal expansion. A discussion of the proper way to apply the equivalent loading due to the out-of-phase actuation is done. A finite element analysis using piezoelectric elements is performed. A comparison between the impedance modeling and the more conventional static modeling approach is also made. Based on the governing equations derivation, the equivalent actuator loading can be included either as an induced uniform moment over the footprint of the actuators or as an external line moment at the ends of the actuators. A dynamic finite element analysis is performed using ANSYS 5.0 piezoelectric elements. The structural responses predicted by both eigenfunctions and modal expansion impedance models show a good match with those obtained using finite element analysis.

Journal of Intelligent Material Systems and Structures, Vol. 6, No. 3, 389-395 (1995)
DOI: 10.1177/1045389X9500600310


CiteULike    Complore    Connotea    Del.icio.us    Digg    Reddit    Technorati    Twitter    What's this?

This article has been cited by other articles:

				C. Niezrecki and H. H. Cudney Feasibility to Control Launch Vehicle Internal Acoustics Using Piezoelectric Actuators Journal of Intelligent Material Systems and Structures, September 1, 2001; 12(9): 647 - 660. [Abstract] [PDF]

				J. Q. Sun An Impedance Study of Curved Sandwich Trim Panels Driven by Piezoelectric Patch Actuators Journal of Sandwich Structures and Materials, April 1, 1999; 1(2): 128 - 146. [Abstract] [PDF]