摘要
The post-fabrication machining of additively manufactured biomedical parts is essential for achieving dimensional accuracy.However,conventional machining encounters issues in dealing with the growing demand for surface quality and the inherent defects of parts.To improve the machining quality,the correlation between material variations and ultrasonic machining quality is investigated in terms of material properties.This variation induced by additive strategies is experimentally revealed and the mechanism for this difference is further explained through molten pool dynamic simulation.In addition,to elucidate the unique machining advantages,a hybrid cutting simulation is implemented to analyze the improving behavior of ultrasonic vibration on the common defects of additively manufactured parts.Taken together,this study demonstrates the role that material property differences play in post-fabrication machining and validates the superiority of ultrasonic machining as a post-fabrication machining method for additively manufactured parts.
基金
supported by the National Natural Science Foun-dation of China(Nos.51975112 and52375412)
the Fundamental Research Funds for Central Universities(No.N2203003)
the Singapore Ministry of Education(Grant No.A-8001225-00-00).
