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

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

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