Estimating Linear Joint Stiffness and Damping Using a Frequency-Based Optimization Framework and the Emerging Concept of DyDis

Marie Brøns*, Francesco Trainotti, Daniel J. Rixen

*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceedingArticle in proceedingsResearchpeer-review

Abstract

Accurate estimation of stiffness and damping of linear bolted joints is a challenge. Commonly employed approaches using frequency-based substructuring techniques can fail if the measurement quality is not good enough. Even a minimal noise level can significantly impact the accuracy of estimations due to matrix inversions. This study proposes a novel approach that combines an optimization framework utilizing frequency-based substructuring with the emerging concept of Dynamic Disturbance (DyDis) to enhance the robustness of linear bolted joint parameter estimation.

Original languageEnglish
Title of host publicationDynamic Substructures : Proceedings of the 42nd IMAC, A Conference and Exposition on Structural Dynamics 2024
EditorsWalter D’Ambrogio, Dan Roettgen, Maarten van der Seijs
Volume4
PublisherSpringer
Publication date2025
Pages37-42
ISBN (Print)978-3-031-68896-6
ISBN (Electronic)978-3-031-68897-3
DOIs
Publication statusPublished - 2025
Event42nd IMAC - Rosen Plaza Hotel, Orlando, United States
Duration: 29 Jan 20241 Feb 2024

Conference

Conference42nd IMAC
LocationRosen Plaza Hotel
Country/TerritoryUnited States
CityOrlando
Period29/01/202401/02/2024
SeriesConference Proceedings of the Society for Experimental Mechanics Series
Volume4
ISSN2191-5644

Keywords

  • Frequency-based substructuring
  • Joint identification
  • Optimization

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