Journal article
Identification of the viscoelastic boundary conditions of Euler-Bernoulli beams using transmissibility
ENGINEERING REPORTS, Vol.1(5), e12074
2019
DOI: 10.1002/eng2.12074
Abstract
A new method to identify the viscoelastic boundary conditions of Euler-Bernoulli beams under forced response is here presented. The boundary conditions and transmissibility function with viscoelastic expressions in terms of the Green function are introduced in the identification process. Two distinct identification methods are proposed: the least squares method with singular value decomposition; and the pattern search optimization method. Three examples are reported to demonstrate the efficacy of the proposed methods. The results from the least squares method to provide accurate solutions under noise-free conditions, but poorly perform with the addition of 1% noise. Conversely, the pattern search optimization method integrates the solutions from different frequencies and provides promising solutions, even with 50% noise. The capability of identifying complex boundary conditions under high levels of noise might open the door for the proposed method to be considered in real-life applications of structural health monitoring and model updating with boundary conditions of beam-like structures such as bridges.
Details
- Title: Subtitle
- Identification of the viscoelastic boundary conditions of Euler-Bernoulli beams using transmissibility
- Creators
- G D Qiao - University of IowaS Rahmatalla - University of Iowa
- Resource Type
- Journal article
- Publication Details
- ENGINEERING REPORTS, Vol.1(5), e12074
- DOI
- 10.1002/eng2.12074
- ISSN
- 2577-8196
- Language
- English
- Date published
- 2019
- Academic Unit
- Roy J. Carver Department of Biomedical Engineering; Civil and Environmental Engineering; Iowa Technology Institute; Injury Prevention Research Center
- Record Identifier
- 9984239163302771
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