EDM multi-pulse temperature field simulation of SiC/Al functionally graded materials
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In order to explore characteristics of electrical discharge machining (EDM) SiC/Al functionally graded materials, the simulation model of EDM continuous multi-pulse discharge temperature field was established. The dynamic simulation of continuous multi-pulse discharge was carried out. The pit position of the random distribution was analyzed using life and death method. The influence of peak current and pulse width on discharge pits and material removal rate was studied and verified experimentally. The results show that with the increasing of peak current and pulse width, the material removal rate is gradually increased. The simulation results are the same direction as the experimental results, and the error analysis is carried out. The maximum error of theoretical experimental results is 9.84% and the minimum error is 5.10%.
KeywordsFunctionally graded materials (FGM) Electrical discharge machining (EDM) Continuous multi-pulse discharge Method of life and death
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The authors would like to thank Mr. Zhao for his fruitful discussion.
This work was financially supported by the National Natural Science Foundation of China (Grant No. 51405365), Shaanxi Provincial Education Department service local special plan project (Grant No. 17JF010), Jiangsu Key Laboratory of Precision and Micro-Manufacturing Technology, Key Laboratory of Science and Technology Innovation Project of Shaanxi Province (Grant No. 2014SZS20-Z01, No. 2014SZS20-P05), the Open Research Fund Program of Shaanxi Key Laboratory of Non-Traditional Machining (Grant No. 2015SZSj-61-6), and Science and Technology Planning Project of Shaanxi Province (Grant No. 2014JM7253).
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