On the effects of roughness on the nonlinear dynamics of a bolted joint: A multiscale analysis
Armand J, Salles L, Schwingshackl CW, Süß D, Willner K (2018)
Publication Language: English
Publication Type: Journal article
Publication year: 2018
Journal
Book Volume: 70
Pages Range: 44-57
DOI: 10.1016/j.euromechsol.2018.01.005
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.
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APA:
Armand, J., Salles, L., Schwingshackl, C.W., Süß, D., & Willner, K. (2018). On the effects of roughness on the nonlinear dynamics of a bolted joint: A multiscale analysis. European Journal of Mechanics A-Solids, 70, 44-57. https://doi.org/10.1016/j.euromechsol.2018.01.005
MLA:
Armand, J., et al. "On the effects of roughness on the nonlinear dynamics of a bolted joint: A multiscale analysis." European Journal of Mechanics A-Solids 70 (2018): 44-57.
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