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Nonlinear Strain Estimation Based on Linear Parameters

[+] Author Affiliations
Bruna Nabuco, Tobias Friis, Sandro Amador, Evangelos I. Katsanos, Rune Brincker

Technical University of Denmark (DTU), Kongens Lyngby, Denmark

Marius Tarpø

Aarhus University (AU), Aarhus, Denmark

Paper No. OMAE2018-77785, pp. V003T02A039; 7 pages
doi:10.1115/OMAE2018-77785
From:
  • ASME 2018 37th International Conference on Ocean, Offshore and Arctic Engineering
  • Volume 3: Structures, Safety, and Reliability
  • Madrid, Spain, June 17–22, 2018
  • Conference Sponsors: Ocean, Offshore and Arctic Engineering Division
  • ISBN: 978-0-7918-5122-7
  • Copyright © 2018 by ASME

abstract

This paper aims to demonstrate how to estimate strains of fixed structures considering cases with nonlinearities based on parameters determined from one linear case. Both simulated and experimental data have been evaluated. A finite element model was used to obtain the simulated responses. Accelerations and strains were measured along the application of random loading to a fixed structural model for the experimental data. Operational Modal Analysis has been considered in the time domain in order to identify the modal properties. Nonlinearities are included as friction is imposed on the models.

Copyright © 2018 by ASME

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