Scenario Based Approach for Load Identification

  • Michael VigsøEmail author
  • Marius Tarpø
  • Jannick B. Hansen
  • Rune Brincker
  • Christos T. Georgakis
Conference paper
Part of the Conference Proceedings of the Society for Experimental Mechanics Series book series (CPSEMS)


In output only analysis the load identification has been a puzzle for several years. Different techniques have been purposed to cope with the inversion problem that lies within this field. However it has been shown, that most methods struggle to obtain robust and consistent results in cases of modal truncation and noise contaminated signals. In the light of these challenges, a scenario based method is proposed. This approach utilizes model updating along with mode shape expansion to obtain a reliable numerical model of the given structure. Then, by evaluating a series of rational load scenarios, it is possible to obtain a reasonable input identification – both the spatial distribution and the temporal variation of the load. The method is demonstrated numerically and experimentally.


System identification Operational modal analysis Response estimation Modal truncation FE updating 



The authors acknowledge the funding received from Centre for Oil and Gas – DTU/Danish Hydrocarbon Research and Technology Centre (DHRTC).


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Copyright information

© The Society for Experimental Mechanics, Inc. 2019

Authors and Affiliations

  • Michael Vigsø
    • 1
    Email author
  • Marius Tarpø
    • 1
  • Jannick B. Hansen
    • 1
  • Rune Brincker
    • 2
  • Christos T. Georgakis
    • 1
  1. 1.Aarhus UniversityAarhusDenmark
  2. 2.Technical University of DenmarkKongens LyngbyDenmark

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