A theory for structural system identification which utilizes strains and translational displacements as measured outputs is presented. The state variables of the fundamental first-order form consist of the strains and the elemental or substructural rigid-body motion amplitudes. The theory is applicable to, and to some respects, motivated by the advances and expanded use of embedded piezoelectric sensors and fiber optics. A distinct feature of the present theory is its ability to provide rotational flexibility without having to measure rotational quantities. The theory is illustrated by simple ideal examples.
A Theory for Strain-Based Structural System Identification
Contributed by the Applied Mechanics Division of THE AMERICAN SOCIETY OF MECHANICAL ENGINEERS for publication in the ASME JOURNAL OF APPLIED MECHANICS. Manuscript received by the ASME Applied Mechanics Division, Feb. 16, 2000; final revision, Feb. 21, 2001. Associate Editor: A. K. Mal. Discussion on the paper should be addressed to the Editor, Professor Lewis T. Wheeler, Department of Mechanical Engineering, University of Houston, Houston, TX 77204-4792, and will be accepted until four months after final publication of the paper itself in the ASME JOURNAL OF APPLIED MECHANICS.
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Reich, G. W., and Park, K. C. (February 21, 2001). "A Theory for Strain-Based Structural System Identification ." ASME. J. Appl. Mech. July 2001; 68(4): 521–527. https://doi.org/10.1115/1.1379954
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