Determining the damping factors for jointed metal plates
Walker, Scott J.I., Aglietti, Guglielmo S. and Cunningham, Paul R. (2006) Determining the damping factors for jointed metal plates. In, Proceedings of the 9th International Conference on Recent Advances in Structural Dynamics. Ninth International Conference on Recent Advances in Structural Dynamics Southampton, UK, University of Southampton, Institute of Sound and Vibration Research. (155).
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It has been argued that many of the shortfalls in current dynamic models of built-up structures are due to the fact that the physics of joint dynamics are not fully understood or properly represented in the models. In fact in many applications the damping parameters are generally thought to be almost chaotic in nature, seemingly affected even by small changes in their immediate environment. The prediction of the damping factors of structural joints is therefore recognised as a challenging problem in the analysis of all built up structures and is of critical importance in predicting the fatigue life of an aircraft structure. The objective of this investigation is to use experimental data of joint damping to determine the proportional and non proportional damping factors for various jointed plate configurations. These configurations include a bolted joint at a range of torques as well as a riveted joint. The theoretical approach is outlined in the paper along with a general discussion of the experimental data trends. The paper concludes with an assessment of the accuracy of the method and its applicability to more complex structures.
|Item Type:||Book Section|
|Keywords:||damping, joints, modelling|
|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
|Date Deposited:||22 Sep 2006|
|Last Modified:||28 Mar 2014 15:12|
Quantitative Prediction of Modal Damping in Complex Built-Up Structures
Funded by: EPSRC (GR/S66718/01)
1 May 2004 to 30 April 2006
|RDF:||RDF+N-Triples, RDF+N3, RDF+XML, Browse.|
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