Finite Element Method Simulations to Improve Press Formability of Door Hinge

초록

Door hinges are a key product in the automotive industry. The function of automotive door hinge is not only to close, open, and keep the open angle of the door but also to reduce traumas for passengers in the car when it is hit by another car. However, concentrated stress and strain occur at the corner of this product during forming, which can cause a crack if the shape of this area of the blank is not carefully designed. Accordingly, this article proposes a method for improving the press formability of a door hinge by changing the shape of the concerned area of the blank based on finite element method (FEM) simulations using the explicit dynamic code ABAQUS, version 6.5. The resulting optimized solution for robust forming was a corner radius of 7 mm, protrusion length of 18 mm, and protrusion height of 5 mm.

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