Bolted connection modeling and validation through laser-aided testing

Kaoshan Dai; Changqing  Gong; Benjiamin Smith

doi:10.1117/12.2009466

Abstract

Bolted connections are widely employed in facility structures, such as light masts, transmission poles, and wind turbine towers. The complex connection behavior plays a significant role in the overall dynamic characteristics of a structure. A finite element (FE) modeling study of a bolt-connected square tubular steel beam is presented in this paper. Modal testing was performed in a controlled laboratory condition to validate the FE model, developed for the bolted beam. Two laser Doppler vibrometers were used simultaneously to measure structural vibration. A simplified joint model was proposed to further save computation time for structures with bolted connections. This study is an on-going effort to marshal knowledge associated with detecting damage on facility structures with bolted connections.

Citation Download Citation

Kaoshan Dai, Kaoshan Dai, Changqing Gong, Changqing Gong, Benjiamin Smith, Benjiamin Smith, } "Bolted connection modeling and validation through laser-aided testing", Proc. SPIE 8694, Nondestructive Characterization for Composite Materials, Aerospace Engineering, Civil Infrastructure, and Homeland Security 2013, 869424 (16 April 2013); doi: 10.1117/12.2009466; https://doi.org/10.1117/12.2009466

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