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2010•Unpublished venueRequires access

Study of an interference fit fastener assembly

Manuel Paredes, Naoufel Nefissi, Marc Sartor

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Abstract

This paper presents the study of an assembly of two plates using an interference fit fastener. Such an assembly is commonly exploited in aeronautics applications. The interference between the screw and the plates induces a loss of load all along the screw axis due to the combined effect of radial pressure and friction. This effect is simulated using a finite element analysis with Abaqus. The evolution of pressure all along the interference area shows that edges effects appear not only at the external edges but also at the interface between plates. In order to evaluate the capability of sensors to be experimentally exploited, the evolution of the axial strain all along the screw axis is also investigated. This study highlights the influence of the radial pressure on the axial strain on the axis of the screw. The influence of both the interference level and the friction factor are also investigated.

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What this paper is about

This paper presents the study of an assembly of two plates using an interference fit fastener. Such an assembly is commonly exploited in aeronautics applications. The interference between the screw and the plates induces a loss of load all along the screw axis due to the combined effect of radial pressure and friction. This effect is simulated using a finite element analysis with Abaqus. The evolution of pressure all along the interference area shows that edges effects appear not only at the external edges but also at the interface between plates. In order to evaluate the capability of sensors to be experimentally exploited, the evolution of the axial strain all along the screw axis is also investigated. This study highlights the influence of the radial pressure on the axial strain on the axis of the screw. The influence of both the interference level and the friction factor are also investigated.

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Available abstract

This paper presents the study of an assembly of two plates using an interference fit fastener. Such an assembly is commonly exploited in aeronautics applications. The interference between the screw and the plates induces a loss of load all along the screw axis due to the combined effect of radial pressure and friction. This effect is simulated using a finite element analysis with Abaqus. The evolution of pressure all along the interference area shows that edges effects appear not only at the external edges but also at the interface between plates. In order to evaluate the capability of sensors to be experimentally exploited, the evolution of the axial strain all along the screw axis is also investigated. This study highlights the influence of the radial pressure on the axial strain on the axis of the screw. The influence of both the interference level and the friction factor are also investigated.

Key concepts: Fastener, Interference fit, Interference (communication), Finite element method, Structural engineering, Materials science, Mechanical engineering, Engineering

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