Geodesic
Comparison of quasi-stationary and non-stationary solutions of electrochemical machining problems applying to precision cutting with plate electrode-tool
Vestnik Ûžno-Uralʹskogo gosudarstvennogo universiteta. Seriâ, Matematičeskoe modelirovanie i programmirovanie, Tome 12 (2019) no. 1, pp. 5-19

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The quasi-stationary problem for modelling the process of electrochemical cutting with a plate electrode-tool is formulated. The formulation of the problem is based on the use of a stepwise function of current efficiency from the current density. Thus three areas with various conditions are formed on the machined surface. The usual stationarity condition is used in the area of high current densities. In the area of low current densities the dissolution is absent and the initial form of the boundaries remains. In the intermediate zone, the current density at each point is equal to the critical value. The presence of boundary conditions on each section of the machined surface allows to formulate a boundary problem for the analytical function of the complex variable and to find the shape of the boundary at any moment, regardless of the background. The solutions of quasi-stationary and non-stationary problems are compared, and the range of existence of quasi-stationary solutions is found.
Keywords: electrochemical shaping, stepwise function, quasi-stationary model
Mots-clés : error estimation. 
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     title = {Comparison of quasi-stationary and non-stationary solutions of electrochemical machining problems applying to precision cutting with plate electrode-tool},
     journal = {Vestnik \^U\v{z}no-Uralʹskogo gosudarstvennogo universiteta. Seri\^a, Matemati\v{c}eskoe modelirovanie i programmirovanie},
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V. P. Zhitnikov; N. M. Sherykhalina; S. S. Porechny. Comparison of quasi-stationary and non-stationary solutions of electrochemical machining problems applying to precision cutting with plate electrode-tool. Vestnik Ûžno-Uralʹskogo gosudarstvennogo universiteta. Seriâ, Matematičeskoe modelirovanie i programmirovanie, Tome 12 (2019) no. 1, pp. 5-19. http://geodesic.mathdoc.fr/item/VYURU_2019_12_1_a0/