Estimating bolt tightness from measured vibrations: Effective linearity of nonlinear boundary stiffness

Si Mohamed Sah*, Jon Juel Thomsen, Alexander Fidlin

*Corresponding author for this work

    Research output: Contribution to conferenceConference abstract for conferenceResearch

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    Abstract

    Experimental evidence shows that the tightness of a bolt can be estimated from its vibrational response using a pre-stressed beam model with linear stiffness at its boundaries. We show how considering only linear boundary stiffness successfully reproduce the experimental results. A model of multiple nonlinear springs, modelling the asperities, is presented and it is shown that as the number of asperities increases the system’s response becomes linear-like.
    Original languageEnglish
    Publication date2019
    Number of pages2
    Publication statusPublished - 2019
    Event1st International Nonlinear Dynamics Conference - Rome, Italy
    Duration: 17 Feb 201920 Feb 2019
    Conference number: 1

    Conference

    Conference1st International Nonlinear Dynamics Conference
    Number1
    Country/TerritoryItaly
    CityRome
    Period17/02/201920/02/2019

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