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Proceedings Paper

Supporting results on the modeling of wave propagation and energy dissipation in joints
Author(s): Jaime Esteban; Frederic Lalande; Zaffir A. Chaudhry; Craig A. Rogers
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Paper Abstract

A method to characterize the energy dissipation in an overlapped bolted beam structure was derived in the first part of this paper. As a continuation of this work, a comparison of the results obtained by this methodology and the experiments used to corroborate them, are presented here. The gain of the structure (ratio of the response over the forcing function) is numerically calculated, and then experimentally verified for a high frequency content (up to 25 kHz). A linear model for the bolted joint is first assumed, and the resonant frequencies for the first twenty flexural modes are investigated. The energy flow across the jointed section is then obtained by mathematical manipulation of the power flux of the propagating waves at the connection. Thereafter, an extended nonlinear model, accounting for the nonlinear behavior of the joint, is studied in order to increase the accuracy of the method at a higher frequency range. Similar analysis of the wave interaction at the joint is also performed.

Paper Details

Date Published: 6 June 1997
PDF: 10 pages
Proc. SPIE 3041, Smart Structures and Materials 1997: Smart Structures and Integrated Systems, (6 June 1997); doi: 10.1117/12.275666
Show Author Affiliations
Jaime Esteban, Virginia Polytechnic Institute and State Univ. (United States)
Frederic Lalande, Virginia Polytechnic Institute and State Univ. (United States)
Zaffir A. Chaudhry, United Technologies Research Ctr. (United States)
Craig A. Rogers, Univ. of South Carolina/Columbia (United States)

Published in SPIE Proceedings Vol. 3041:
Smart Structures and Materials 1997: Smart Structures and Integrated Systems
Mark E. Regelbrugge, Editor(s)

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