Numerical burst pressure estimation of a grooved rupture disc: implementing a coupled transient thermal and dynamic load
摘要
Protecting reservoirs is crucial with the growth of the oil and gas industry and millions of pressure vessels globally. This study uses the finite element method to focus on the influence of various factors on the bursting process of the rupture disc. A rupture disc is a pressure control device used to protect and enhance the reliability of pressure vessels or equipment with a sudden vacuum. This study investigates the effect of several parameters, such as groove thickness, depth, heat treatment effect, aluminum alloy types, groove geometry, and load amplitude, in the simultaneous presence of pressure and thermal load to analyze rupture discs. Because of the high sensitivity of performing the rupture disc, the burst pressure is computed and simulated by software in two cases, with and without thermal load. Comparing the burst pressure results of LS-DYNA with experiments showed that this model is accurate. By analyzing the ruptured disc, it is determined that the maximum stress concentration occurs at the center of the disc. The temperature does not impact burst pressure because of insufficient time to affect rupture disc strength. This means that the temperature has a negligible effect on burst pressure. The effect of decreasing the thickness of the rupture disc is more obvious for rupture disc substrates with less Ultimate Tensile Strength (UTS). The difference in (UTS) can also explain the change in the thickness reduction rate of the rupture discs made from different materials. The findings mentioned above are highly significant for guiding the control of rupture disc burst pressure.
Graphical Abstract