非导电工程陶瓷电火花放电蚀除特性的数值模拟

he technology of machining insulating engineering with instantaneous high tempeterature and high pressure produced by discharge channel flowing insulating engineering surface has been developed recently by authors. The process shows high material removal rate, low cost and without pollution. The mathematical models of temperature and thermal stress for electrical discharge machining of insulating ceramics has been established. The numerical simulation of the temperature gradientand thermal stress for electrical discharge machining of insulating engineering ceramics has been done. The distributions of temperature gradient and thermal stress acting on the insulating engineering surface are given.