Simplified model to study the dynamic behaviour of a bolted joint and its self loosening

Abstract : Bolted joints are essential elements of mechanical structures and metal constructions. Although their static behaviour is fairly well known, their dynamic behaviour due to shocks and vibrations has been less studied, because of the large size of the finite element models needed for a detailed simulation. This work presents four different simplified models suitable for studying the dynamic behaviour of an elementary bolted joint. Three of them include contact elements to allow sliding of the screw head and the nut on the assembled parts, and the last one allows rotation between screw and nut. A penalty approach based on the Coulomb friction model is used to model contact. The results show that these models effectively represent the dynamic behaviour, with different accuracy depending on the model details. The last model simulates the self loosening of a bolt subjected to transversal vibrations.
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https://hal-univ-tlse3.archives-ouvertes.fr/hal-01951242
Contributor : Pierre Naegelen <>
Submitted on : Tuesday, December 11, 2018 - 12:18:58 PM
Last modification on : Monday, June 10, 2019 - 6:40:51 PM

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Olfa Ksentini, Bertrand Combes, Mohamed Slim Abbes, Alain Daidié, Mohamed Haddar. Simplified model to study the dynamic behaviour of a bolted joint and its self loosening. Structural Engineering and Mechanics, 2015, 55 (3), pp.639-654. ⟨10.12989/sem.2015.55.3.639⟩. ⟨hal-01951242⟩

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