Spectral FEM-Based Dynamic Characterization of Structural Joints: Theory and Experiment


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A spectral element (SE)-model based frequency-domain method was proposed in the previous work [1] to identify the dynamic characteristics of a structural joint within onedimensional structures. In the present work, experimental work is conducted to verify the proposed method. The bolt-joint is represented by an equivalent joint model with four parameters, and the four parameters are determined by experimentally measured FRF data. The experimentally identified bolt-joint is shown to provide the dynamic responses which are in good agreement with measured dynamic responses.



Key Engineering Materials (Volumes 326-328)

Edited by:

Soon-Bok Lee and Yun-Jae Kim




U. Lee et al., "Spectral FEM-Based Dynamic Characterization of Structural Joints: Theory and Experiment", Key Engineering Materials, Vols. 326-328, pp. 1629-1632, 2006

Online since:

December 2006




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[2] J.X. Yuan and X.M. Wu: Journal of Engineering for Industry Vol. 107 (1985), pp.64-69.

[3] J.S. Tsai and Y.F. Chou: Journal of Sound and Vibration Vol. 125 (1988), pp.487-502.

[4] A.S. Nobari, D.A. Robb and D.J. Ewins: International Journal of Analytical and Experimental Modal Analysis Vol. 8 (1933), pp.95-103.

[5] J.F. Doyle: Wave Propagation in Structures (Springer-Verlag, New York 1997).

[6] U. Lee, J. Kim and A.Y.T. Leung: The Shock and Vibration Digest Vol. 32(6) (2000), 451-465.

[7] S. K. Clark: Dynamics of Continuous Elements (Prentice-Hall, New Jersey 1972).

[8] E.O. Brigham: The Fast Fourier Transform and Its Applications (Prentice-Hall, London, 1988). Fig. 5 Predicted equivalent transverse and torsional spring constants Fig. 6 Predicted equivalent mass and moment of inertia Fig. 7 Comparison of the measured and predicted transverse inertances at node 4 Fig. 8 Comparison of the measured and predicted accelerations at node 4.

DOI: https://doi.org/10.7717/peerj.1727/fig-7