Experimental and finite element optimization analysis on hydroforming process of rupture disc

Rupture disc has been one of the most effective equipment to prevent overpressure from explosion for the pressure equipment. The performance of bursting at the predetermined pressure is critical to rupture disc, which was decided directly with the dimensional accuracy of the rupture disc such as thickness, radius value and arch height. In this paper, a hydroforming FEA rupture disc model was established and factors that affect the dimensional accuracy of the rupture disc, which is friction coefficient, loading rate and value of hydraulic pressure, were discussed. It was found that a better rupture disc dimension accuracy can be obtained by changing the friction condition and loading rate. Based on the real hydroforming process, experiment was carried out and FEA results agreed well with experimental process result. Thus, dimensional accuracy of the rupture disc can be ensured through finite element analysis. (C) 2018 The Authors. Published by Elsevier B.V. Peer-review under responsibility of the scientific committee of the 17th International Conference on Metal Forming.