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    Effects of Nonuniformities in Fasteners on Localized Vibration and Fatigue

    Published: 01 January 1995

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    The purpose of this paper is to report on an ongoing project that combines recent developments in the fields of vibrations and modeling to increase the service-free life and the quality of performance and reliability of fasteners and to reduce unnecessary maintenance and failure in aircraft structures. In this project, the feasibility of developing an efficient and effective mathematical model capable of incorporating the dynamic characteristics of fasteners, their interfaces with the host structure, and the host structure itself is being investigated. Such a combination will result in a significant gain in computational speed and an improvement in the accuracy of the numerical results, producing a better prediction. The model will be adaptive based on the closed-loop dynamic relation between fasteners and the host structure. The main contribution of this work is to include the effect of fasteners on vibration phenomena such as loci veering and mode localization and the application of the receptance method, which makes the model compatible with existing computer models, to the dynamics of fasteners.


    fasteners/joints, mode localization, structures, receptances, vibrations, fatigue

    Author Information:

    Allaei, D
    Senior scientist, ORDC, Inc., Excelsior, MN

    Program manager, Sound and Vibration Engineering Technology Program, Hutchinson Technical College, Hutchinson, MN

    Committee/Subcommittee: E08.04

    DOI: 10.1520/STP13043S