Damage identification in structural joints using generic joint elements

Dexin Wang, Michael I. Friswell, Parviz E Nikravesh, Everett Y. Kuo

Research output: Chapter in Book/Report/Conference proceedingConference contribution

5 Citations (Scopus)

Abstract

This paper considers the identification of damage in joints for a structure where no baseline model is available. Linear equations are formulated to relate the joint parameter variations caused by damage to the measured or simulated responses in the frequency domain. Generic joint elements with only translational degrees of freedom are defined to model the structure with damage at the joints. For a particular type of joint, the generic joint element stiffness matrices are formed by using only the translational components of the mode shapes, which can be approximated intuitively or by a detailed FE analysis of the joint. The modeling with generic joint elements also makes the consideration of the rotation coupling more natural. In addition, using generic joint elements can avoid the geometric complexity involved in defining structural joints in the traditional way. With the assumption that the damage appears only in the joints, the other parts of the structure such as beam-like and plate-like components do not need to be modeled in the formulation. The methods are illustrated by a plane portal frame with both L-shape and T-shape joints. The results show that the method is effective in locating the damage in these joints.

Original languageEnglish (US)
Title of host publicationProceedings of the International Modal Analysis Conference - IMAC
Editors Anon
PublisherSEM
Pages792-798
Number of pages7
Volume1
StatePublished - 1999
EventProceedings of the 1999 17th International Modal Analysis Conference, IMAC. Part 1 (of 2) - Kissimmee, FL, USA
Duration: Feb 8 1999Feb 11 1999

Other

OtherProceedings of the 1999 17th International Modal Analysis Conference, IMAC. Part 1 (of 2)
CityKissimmee, FL, USA
Period2/8/992/11/99

Fingerprint

Stiffness matrix
Linear equations

ASJC Scopus subject areas

  • Engineering(all)

Cite this

Wang, D., Friswell, M. I., Nikravesh, P. E., & Kuo, E. Y. (1999). Damage identification in structural joints using generic joint elements. In Anon (Ed.), Proceedings of the International Modal Analysis Conference - IMAC (Vol. 1, pp. 792-798). SEM.

Damage identification in structural joints using generic joint elements. / Wang, Dexin; Friswell, Michael I.; Nikravesh, Parviz E; Kuo, Everett Y.

Proceedings of the International Modal Analysis Conference - IMAC. ed. / Anon. Vol. 1 SEM, 1999. p. 792-798.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Wang, D, Friswell, MI, Nikravesh, PE & Kuo, EY 1999, Damage identification in structural joints using generic joint elements. in Anon (ed.), Proceedings of the International Modal Analysis Conference - IMAC. vol. 1, SEM, pp. 792-798, Proceedings of the 1999 17th International Modal Analysis Conference, IMAC. Part 1 (of 2), Kissimmee, FL, USA, 2/8/99.
Wang D, Friswell MI, Nikravesh PE, Kuo EY. Damage identification in structural joints using generic joint elements. In Anon, editor, Proceedings of the International Modal Analysis Conference - IMAC. Vol. 1. SEM. 1999. p. 792-798
Wang, Dexin ; Friswell, Michael I. ; Nikravesh, Parviz E ; Kuo, Everett Y. / Damage identification in structural joints using generic joint elements. Proceedings of the International Modal Analysis Conference - IMAC. editor / Anon. Vol. 1 SEM, 1999. pp. 792-798
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