The effect of preload and surface roughness quality on linear joint model parameters

Jalali, Hassan, Khodaparast, Hamed Haddad and Friswell, Michael I. (2019) The effect of preload and surface roughness quality on linear joint model parameters. Journal of Sound and Vibration, 447. pp. 186-204. ISSN 0022-460X

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Official URL: https://doi.org/10.1016/j.jsv.2019.01.050

Abstract

The physical parameters of the contact interfaces, such as preload and surface roughness quality, significantly affect the stiffness of joints. Knowledge of the relationship between these interface parameters and the equivalent stiffness allows joints to be considered in the design stages of complex structures. Hence, this paper considers the effect of contact interface parameters on the identified equivalent stiffness parameters of joint models. First, a new generic joint model is proposed to model the contact interfaces. Then, the ability of three different joint models, including the new model proposed in this paper, to capture the linear effects of contact interfaces under different preloads and surface roughness qualities is investigated. Finally, it is concluded that the preload and surface roughness quality control the normal and shearing stiffness of the joint models respectively. Experimental investigations also reveal that a complex mechanism governs the energy dissipation in the contact interface.

Item Type: Article
Uncontrolled Keywords: Preload, Structural joint, Surface roughness
Subjects: H300 Mechanical Engineering
H900 Others in Engineering
Department: Faculties > Engineering and Environment > Mechanical and Construction Engineering
Depositing User: Rachel Branson
Date Deposited: 28 Jul 2020 10:55
Last Modified: 28 Jul 2020 11:00
URI: http://nrl.northumbria.ac.uk/id/eprint/43898

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