A Simplified Algorithm for Sliding Electrical Contact Surface Ablation Considering Phase Change and Magnetic Fluid Lubrication Factors

Abstract

In this article, a kind of armature ablation calculation method is presented considering mechanical (high-speed friction transformation, friction) and magnetohydrodynamic and so on. The main features of this approach simplify the armature material solid-build-gas phase transformation model, high-speed friction, and wear model and the contact surface magnetohydrodynamic film model. The new standard to the armature ablation is that not only the element material melting point temperature is reached but also has a minimum plastic strain; at this moment, this element is recognized as dissolution. Finally, the simulation results are compared with the experimental results; both are in good agreement, so as to verify the correctness of this algorithm.