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Improvement of a tail-plane strucural model using vibration test data.

By Shijun J. Guo

Abstract

To achieve the best structural model improvement using vibration test data, a major effort has been made to identify poor modelling regions as a guideline for subsequent model updating. The method presented and used in this paper is the energy error estimation method. In the method the difference between analytical and test data based energies at element scale is estimated to indicate any poor structural mass and stiffness modelling. As a result, poor modelling regions can be distinguished from those modelled correctly and the improvement of the original structural model can be carried out effectively and accurately. To demonstrate the application of this method, a full-scale tail-plane structure has been studied by using simulated "test" modes as a simulated case and using measured modes as a practical case. In both cases poor modelling regions of the original structural model have been accurately located. Subsequently, a significant improvement of the structural model with a reduction of average frequency error from original 2·2% down to 0·1% for the simulated case and from 4·6 to 1·8% for the practical case has been achi

Publisher: Elsevier Science B.V., Amsterdam
Year: 2002
DOI identifier: 10.1006/jsvi.2002.5013
OAI identifier: oai:dspace.lib.cranfield.ac.uk:1826/965
Provided by: Cranfield CERES
Journal:

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Citations

  1. (1978). 1210. Optimal procedure to correct of stiffness and flexibility matrices using vibration tests. doi
  2. (1989). A direct two-response approach for updating analytical dynamic models of structures with emphasis on uniqueness. doi
  3. (1991). a FE model with dynamic reduction using test data.
  4. (1995). An energy error estimation method for improving analytical models using vibration modal test data. doi
  5. (1990). criterion for the localization of structural modification sites using modal data.
  6. (1993). Hertfordshire. Analytical dynamic model improvement using vibration test data
  7. (1983). Improvement of a large analytical model using test data. doi
  8. (1979). Mass matrix correction using an incomplete set of measured modes. doi
  9. Modal analysis for damage detection in structures. doi
  10. (1984). Spacecraft structural system identification by modal test. doi
  11. (1994). Structural damage detection of space truss structures using best achievable eigen-vectors. doi
  12. (2000). Structural damage localisation using energy error estimation method.
  13. (1998). Structural damage localization from modal strain energy change. doi

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