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Abstract
Metal closures, with an integrated joint, are widely used in the food industry to ensure the sealing of the glass bottles by setting. The assembly performance is measured by the leakage pressure.
In this thesis, the finite element simulation of crowning a sealing cap on a glass bottle is realized. The forces exerted by the bottle on the joint are recorded in function of the internal pressure.
The simulation of the crowning operation is run with the finite element software Ansys®. The elasto-plastic behavior of the metal cap, the hyper-elastic behavior of the polymer seal and the rigid to flexible contact between the rigid tools and the cap are taken into account in this three dimensional analysis.
Several measures have been taken in laboratory in order to relate the behavior of the polymer sea] with the leakage pressure. These measures are used in combination with the results of the finite element simulation for predicting the leakage pressure of a given assembly.
The visual comparison between the final geometry of the assembly and the simulation is in good accordance. In addition, the predicted leakage pressure of an assembly is also in good accordance with experiments.
