On the effects of roughness on the nonlinear dynamics of a bolted joint: a multiscale analysis

Title: On the effects of roughness on the nonlinear dynamics of a bolted joint: a multiscale analysis
Author(s): Armand, J
Salles, L
Schwingshackl, CW
Süß, D
Willner, K
Item Type: Journal Article
Abstract: Accurate prediction of the vibration response of friction joints is of great importance when estimating both the performance and the life of build-up structures. The contact conditions at the joint interface, including local normal load distribution and contact stiffness, play a critical role in the nonlinear dynamic response. These parameters strongly depend on the mating surfaces, where the surface roughness is well known to have a significant impact on the contact conditions in the static case. In contrast, its effects on the global and local nonlinear dynamic response of a build-up structure is not as well understood due to the complexity of the involved mechanisms. To obtain a better understanding of the dependence of the nonlinear dynamic response on surface roughness, a newly proposed multiscale approach has been developed. It links the surface roughness to the contact pressure and contact stiffness, and in combination with a multiharmonic balance solver, allows to compute the nonlinear dynamic response for different interface roughness. An application of the technique to a single bolted lap joint highlighted a strong impact of larger roughness values on the pressure distribution and local contact stiffness and in turn on the nonlinear dynamic response.
Publication Date: 7-Feb-2018
Date of Acceptance: 16-Jan-2018
URI: http://hdl.handle.net/10044/1/57638
DOI: https://dx.doi.org/10.1016/j.euromechsol.2018.01.005
ISSN: 0997-7538
Publisher: Elsevier
Start Page: 44
End Page: 57
Journal / Book Title: European Journal of Mechanics - A/Solids
Volume: 70
Copyright Statement: © 2018 Published by Elsevier Masson SAS. This manuscript is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License http://creativecommons.org/licenses/by-nc-nd/4.0/
Keywords: 0905 Civil Engineering
0913 Mechanical Engineering
Mechanical Engineering & Transports
Publication Status: Accepted
Appears in Collections:Faculty of Engineering
Mechanical Engineering

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