Multi non-linear structural condition modelling and assessment

Wenzel Helmut, Tanaka Hiroshi, Schäfer David, Höllrigl Binder Michaela, Allmer Helga

Research output: Contribution to conferencePaper

Abstract

System identification methodologies have reached a mature state. Starting from mechanical engineering it quickly conquered civil engineering as well as aerospace applications. Damage detection has been the key topic of recent research work in this field. Learning from evolution of dynamic characteristic throughout the damage process, one can validate damage detection methods or set benchmark studies for typical aging processes of a structure. When dynamics gain a guiding role in the behaviour of a structure our conventional approaches fail. The influence of the various nonlinearities can not be neglected anymore. This paper is determined to describe a number of these non-linearities and their embedment into the system identification procedure. The results show that changes of natural frequencies are clearly visible, but not a reliable identification approach. Identifying the non-linearities helps to identify damage at an early stage and enables even damage quantification, location and most important remaining lifetime prediction.

Original languageEnglish (US)
Pages18-23
Number of pages6
StatePublished - Jan 1 2009
Event8th International Workshop on Modeling and Applied Simulation, MAS 2009, Held at the International Mediterranean and Latin American Modeling Multiconference, I3M 2009 - Puerto de la Cruz, Spain
Duration: Sep 23 2009Sep 25 2009

Other

Other8th International Workshop on Modeling and Applied Simulation, MAS 2009, Held at the International Mediterranean and Latin American Modeling Multiconference, I3M 2009
CountrySpain
CityPuerto de la Cruz
Period9/23/099/25/09

Keywords

  • Damage detection
  • Health monitoring
  • Non-linear dynamic behaviour
  • System identification

ASJC Scopus subject areas

  • Modeling and Simulation

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  • Cite this

    Helmut, W., Hiroshi, T., David, S., Michaela, H. B., & Helga, A. (2009). Multi non-linear structural condition modelling and assessment. 18-23. Paper presented at 8th International Workshop on Modeling and Applied Simulation, MAS 2009, Held at the International Mediterranean and Latin American Modeling Multiconference, I3M 2009, Puerto de la Cruz, Spain.