INVESTIGATION OF POWER CHARACTERISTICS OF SHOCK-WAVE PHENOMENON AT ELECTRO-BLAST IN SOLID
The physical and mathematical model of electro-blast in solid, which consistently describes the operation of the discharge circuit, plasma channel expansion, generation and propagation of the shock-wave disturbances and mechanical stresses in dielectrics is presented. The model allows investigation the basic laws of stored generator energy conversion into the discharge channel energy and transformation of this energy into the shock-wave energy demolishing the solid material. Power characteristics of wave disturbances generated by expanding plasma channel in rock depending on the discharge circuit parameters are analyzed for the fracture pattern prediction. Simulation of electro blast dynamics in solids consecutively describes the physical processes underlying on electro discharge technologies of solid non-conducting materials processing. The quantitative model of electro blast in solids verified by tests will allow optimization of pulse generator parameters and electrode system constructions of high-voltage equipment.