Browse Publications Technical Papers 2010-36-0276

Influence of a New Component on a Bolted Joint 2010-36-0276

Within the development of a new vehicle, with significant body changes and minimal modifications of powertrain layout, one of the challenges presented to the working group came from the necessity of a wire bracket to attend requirements of a new proposed layout. In the current paper will be explored the definition and development of this bolted joint, offering alternatives for keeping synergy even facing frequent obstacles, normally inducing to redesign.
During the development of this joint, the first configuration tested showed self-loosening and subsequent crack at the aluminum shield. From this start point it could be an opportunity for this joint redesigning, but the challenge is how to do it respecting the project constraints, parameters and characteristics, once the components could not be changed significantly due to project timing objectives.
This article shows a brief overview of the bolt types involved, contextualizes the case evidencing the boundary conditions and restrictions to achieve the technical solution and exposes the calculation methodology for a bolted joint. The solution is defined by calculation, experimental bench and vehicle tests for its validation. The results conduct to the adoption of a hex flanged serrated bolt an optimal solution for the situation.


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