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        Thermal simulation of machining of alumina with wire electrical discharge machining process using assisting electrode

        Meinam Annebushan Singh,Koushik Das,Deba Kumar Sarma 대한기계학회 2018 JOURNAL OF MECHANICAL SCIENCE AND TECHNOLOGY Vol.32 No.1

        Electrical discharge machining or Wire electrical discharge machining have proven to be an alternate mean for machining nonconducting materials to a certain extent. Application of assisting electrode over the surface of the non-conducting material plays an important role in successful machining. A numerical model is formulated to understand the effect of assisting electrode and its thickness on material removal characteristics. The modelling is carried out for a 2-D axis-symmetric geometry using Finite element and Finite volume method. The work piece is subjected to a Gaussian distribution of heat flux through an assisting electrode layer. The thermal analysis show satisfactory results for machining of non-conducting materials by wire electrical discharge machining process. An increase in the assisting electrode thickness has resulted in higher heat dissipation rate along the radial direction as compared to the vertical depth. The developed solver has been validated with the experimental and numerical results of previous literature.

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