COMPUTER-AIDED SIMULATION OF PRESSURE DISTRIBUTION IN THE REACTION CONTAINER OF A SIX-PUNCH HIGH-PRESSURE APPARATUS

Abstract

Mathematical modeling of the process of compression of a pyrophilite container by punches of a six-punch high-pressure apparatus (HPA) has been carried out. The finite element method was used for calculations; the calculations were carried out for HPA with a plunger diameter of 560 mm; based on symmetry, 1/48 of the compression system is used.

It was found that, depending on the size of the container and the loading conditions, a complex stress-strain state and an inhomogeneous distribution of pressure over the volume of the container with a maximum axial gradient of up to 0.05 GPa / mm occur.

The optimization of the container dimensions has been carried out, which ensures the most favorable conditions for the distribution of pressures and the minimum values of stresses at the border with metal pressure punches.

It is concluded that the used modeling and calculation methods can be used to analyze the compression conditions for equipment of a much larger size - with a plunger diameter of 750 –1000 mm.