DEFORMED STATE’S SIMULATION OF THE FIRST-GRADE TITANIUM FOIL OF THE ACCELERATOR OUTPUT WINDOW

Abstract

The output accelerator windows, particularly the used metal foils are studied. The work was carried out to assess the strength of the first-strength grade titanium foil and the choice of variable parameters of the thickness of the foil. Depending on the latter, the simulation was performed by the finite element analysis in the ABAQUS automated software environment. The distributions of displacements, plastic strains of concavity caused by pressure differences, and radial and circumferential stresses have been studied in the foil's static state for 10 metal foils with a thickness of 50…500 microns. The basic dimensions of the titanium metal film are introduced: thickness and diameter. Atmospheric pressure was applied as an external force of influence, and the vacuum pressure was assumed to be zero. The metal shells were divided into a large number of nodes, which ensured higher accuracy for simulations. As a result of simulation, curves of the displacements of the selected points of the metal foil in the direction of the Y axis, depending on the values of the radiuses, and the curves of the strains intensities distributions of the metal foil were built, which were also analyzed. The metal foil of the output window was investigated so that simulation results could be applied to both output windows: mechanical connection and diffusion connection.