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Experimental Verification and Improvement of Dynamic Characterization Method for Structural Joints
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151-IMAC XXXI_Experimental Verification and Improvement of Dynamic Characterization Method for Structural Joints_2013.pdf
Date
2013-2-11
Author
Özgüven, Hasan Nevzat
Tol, Şerife
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Mechanical connections play a significant role in predicting the dynamic characteristics of assembled structures accurately. Therefore, several methods were developed to determine equivalent dynamic models for joints. In this paper an experimental identification method based on FRF decoupling and optimization algorithm is proposed for modeling structural joints. The method developed is an extension of the method proposed by the authors in an earlier work. In the method proposed in our earlier work FRFs of two substructures connected with a bolted joint are measured, while the FRFs of the substructures are obtained analytically or experimentally. Then the joint properties are calculated in terms of translational, rotational and cross coupling stiffness and damping values by using FRF decoupling. In this present work, an optimization algorithm is used to update the values obtained from FRF decoupling. The validity and application of the proposed method are demonstrated with experimental case studies. Furthermore, the effects of bolt size on joint dynamics are also studied by making a series of experiments and identifying the joint parameters for each case.
Subject Keywords
Structural joints
,
Joint modeling
,
FRF decoupling
,
Experimental identification
,
FRF measurement
URI
https://hdl.handle.net/11511/105125
DOI
https://doi.org/https://doi.org/10.1007/978-1-4614-6585-0_57
Conference Name
IMAC XXXI Conference
Collections
Department of Mechanical Engineering, Conference / Seminar
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BibTeX
H. N. Özgüven and Ş. Tol, “Experimental Verification and Improvement of Dynamic Characterization Method for Structural Joints,” Garden Grove, California, 2013, vol. 7, p. 585, Accessed: 00, 2023. [Online]. Available: https://hdl.handle.net/11511/105125.