Experimental analysis of damping across joints in metal plates


Walker, Scott J.I., Aglietti, Guglielmo S. and Cunningham, Paul R. (2006) Experimental analysis of damping across joints in metal plates. Journal of Applied Mechanics and Materials, 5-6, 391-398. (doi:10.4028/www.scientific.net/AMM.5-6.391).

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Description/Abstract

In the current world of engineering, structural vibration problems continue impact the design and construction of a wide range of products. Amid the parameters that determine the dynamic behaviour of a structure the one that takes into account the dissipation of energy resulting in the decay of the vibration is the least understood and the most difficult to quantify. The estimation of damping factors is of interest in most branches of engineering sciences. In the field of aircraft structures the damping directly affects the fatigue life, a parameter which is applied conservatively due to the inherent complexity in modelling the damping of built up structures and the potentially catastrophic consequences of a fatigue failure. One of the most important problems is the limited knowledge of how joints affect the damping of the complete structure. This work therefore addresses this issue and focuses on the damping of joints in metal plates as part of a larger project to investigate the damping of built up structures. Various plate configurations are experimentally investigated using two different approaches. The results from the configurations are compared and discussed along with the advantages and disadvantages of each experimental approach. This enables a link to be identified between the damping magnitudes and the mode shapes and joint stiffnesses.

Item Type: Article
ISSNs: 1660-9336 (print)
Related URLs:
Keywords: damping, joints, metal plates
Subjects: T Technology > TJ Mechanical engineering and machinery
T Technology > TL Motor vehicles. Aeronautics. Astronautics
Divisions: University Structure - Pre August 2011 > School of Engineering Sciences > Aerodynamics & Flight Mechanics
University Structure - Pre August 2011 > School of Engineering Sciences > Astronautics
Faculty of Engineering and the Environment
Faculty of Engineering and the Environment > Aeronautics, Astronautics and Computational Engineering
Faculty of Engineering and the Environment > Aeronautics, Astronautics and Computational Engineering > Astronautics
ePrint ID: 41503
Date Deposited: 22 Sep 2006
Last Modified: 28 Mar 2014 15:12
Projects:
Quantitative Prediction of Modal Damping in Complex Built-Up Structures
Funded by: EPSRC (GR/S66718/01)
1 May 2004 to 30 April 2006
URI: http://eprints.soton.ac.uk/id/eprint/41503

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