By means of the developed physical and mathematical model of electro burst, an analysis of the power characteristics of wave disturbances generated by the expanding discharge channel in a solid material has been carried out. The dynamics of the generator energy conversion into the plasma channel and into the wave of mechanical stresses in the solid placed in a liquid has been considered. Conformably to the electro discharge destruction of strong materials, the relation of the discharge circuit parameters with the power characteristics of wave has been analysed. The prediction of a fracture pattern has been made depending on the discharge circuit parameters.
The dielectric breakdown model is generalized and adapted to describe electric discharge propagation in inhomogeneous insulators. The influences of the injected space charge, inclusions and barriers with different dielectric permittivities and conductivities are investigated. The growth of bush, dendrite and skeleton types of discharge structure as well as transformations from one type to another are simulated.
The wave dynamics of a tensely deformed state of a solid material is analysed on plasma discharge channel formation in it at electro burst. Various mechanisms of slabbing cavity formation in the solid have been considered by means of the physical and mathematical model which consistently describes the pulse generator operation, plasma channel expansion and shock waves generation. In less power-intensive mode which is realized by the waves reflected from a solid surface and more power-intensive mode in which function of crack formation is carried out by a direct wave of compressive stresses, the most effective conditions for the destruction of the processed material have been found. The connection of the discharge circuit parameters of the pulse generator with the tensely deformed solid state and fracture pattern has been shown; influence of the material surface geometry and circuit parameters on the mode of possible destruction has been presented.
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