Supporting results on the modeling of wave propagation and energy dissipation in joints

Jaime Esteban; Frederic Lalande; Zaffir A. Chaudhry; Craig A. Rogers

doi:10.1117/12.275666

6 June 1997 Supporting results on the modeling of wave propagation and energy dissipation in joints

Jaime Esteban, Frederic Lalande, Zaffir A. Chaudhry, Craig A. Rogers

Proceedings Volume 3041, Smart Structures and Materials 1997: Smart Structures and Integrated Systems; (1997) https://doi.org/10.1117/12.275666
Event: Smart Structures and Materials '97, 1997, San Diego, CA, United States

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.

Citation Download Citation

Jaime Esteban, Frederic Lalande, Zaffir A. Chaudhry, and Craig A. Rogers "Supporting results on the modeling of wave propagation and energy dissipation in joints", Proc. SPIE 3041, Smart Structures and Materials 1997: Smart Structures and Integrated Systems, (6 June 1997); https://doi.org/10.1117/12.275666

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