Effective health monitoring and distributed control of advanced structures depends on accurate measurements of dynamic responses of elastic structures. Conventional sensors used for structural measurement are usually add-on “discrete” devices. Lightweight distributed thin-film piezoelectric neurons fully integrated (laminated or embedded) with structural components can serve as in-situ sensors monitoring structure’s dynamic state and health status. This study is to investigate modal voltages and detailed signal contributions of linear or nonlinear paraboloidal shells of revolution laminated with piezoelectric neurons. Signal generation of distributed neuron sensors laminated on paraboloidal shells is defined first, based on the open-voltage assumption and Maxwell’s principle. The neuron signal of a linear paraboloidal shell is composed of a linear membrane component and a linear bending component; the signal of a nonlinear paraboloidal shell is composed of nonlinear and linear membrane components and a linear bending component due to the von Karman geometric nonlinearity. Signal components and distributed modal voltages of linear and nonlinear paraboloidal shells with various curvatures and thickness are investigated.
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January 2004
Technical Papers
Distributed Modal Voltages of Nonlinear Paraboloidal Shells With Distributed Neurons
H. S. Tzou,
hstzou@engr.uky.edu
H. S. Tzou
Structronics Lab, Department of Mechanical Engineering, University of Kentucky, Lexington, Kentucky 40506-0503
Search for other works by this author on:
J. H. Ding
jhding@engr.uky.edu
J. H. Ding
Structronics Lab, Department of Mechanical Engineering, University of Kentucky, Lexington, Kentucky 40506-0503
Search for other works by this author on:
H. S. Tzou
Structronics Lab, Department of Mechanical Engineering, University of Kentucky, Lexington, Kentucky 40506-0503
hstzou@engr.uky.edu
J. H. Ding
Structronics Lab, Department of Mechanical Engineering, University of Kentucky, Lexington, Kentucky 40506-0503
jhding@engr.uky.edu
Contributed by the Technical Committee on Vibration and Sound for publication in the JOURNAL OF VIBRATION AND ACOUSTICS. Manuscript received Jan. 2001; Revised June 2003. Associate Editor: C. R. Farrar.
J. Vib. Acoust. Jan 2004, 126(1): 47-53 (7 pages)
Published Online: February 26, 2004
Article history
Received:
January 1, 2001
Revised:
June 1, 2003
Online:
February 26, 2004
Citation
Tzou, H. S., and Ding, J. H. (February 26, 2004). "Distributed Modal Voltages of Nonlinear Paraboloidal Shells With Distributed Neurons ." ASME. J. Vib. Acoust. January 2004; 126(1): 47–53. https://doi.org/10.1115/1.1640359
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