The impact of local current density increase on conductor destruction

A numerical simulation and experimental study of the impact of inhomogeneities at the edges of flat busbars on the distribution of magnetic pressure generated during the flow of a current with a density of 100 kA/mm² and more were carried out. It is shown that the disturbance of the homogeneity of the spatial distribution of the pressure parameters is affected on the size scale of the defect. The formation of defects of type of crack on the edge of flat tires with current can be described using the magnetohydrodynamic approach, typical for describing the destruction of solenoids in strong pulsed magnetic fields. (paper)