Transactions of Materials and Heat Treatment

Title：Influence of ultrasonic vibration on forming forces in incremental forming

Authors： Zhai Weidong Chen Xiaoxiao Li Yanle Sun Lingling Li Jianfeng Zhao Guoqun

Unit： Shandong University National Demonstration Center for Experimental Mechanical Engineering Education(Shandong University)

KeyWords： incremental forming ultrasonic vibration forming force microstructure sheet forming

ClassificationCode：TG386

year,vol(issue):pagenumber：2018,43(8):80-84

Abstract：

In order to research the plastic deformation mechanism of ultrasonic vibration in the forming process，the influences of ultrasonic vibration with different vibration amplitudes and different step sizes on the forming force and microstructure were investigated. First, an experimental platform of ultrasonic-assisted ISF based on CNC milling machine was set up, and the ultrasonic vibration amplitude of forming tool could be controlled. Then, the straight groove incremental forming tests were performed under different ultrasonic vibration amplitudes and step sizes. Furthermore, the forming forces in both vertical and horizontal directions were recorded and analyzed, and the microstructure after forming under ultrasonic vibration was observed. The results show that the forming forces in both vertical and horizontal directions decrease due to the application of ultrasonic vibration. Specifically, the force reduction effect is more significant for horizontal force and with smaller step sizes. Thus, the force reduction rate increases with the increase of vibration amplitude, and the vibration amplitude decreases with the increase of the forming step size.

Funds：

国家自然科学基金青年项目(51605258)；中国博士后科学基金 (2016M592180)；山东省博士后创新项目(201701011)；山东大学基本科研业务费(2016TB006)

翟维东（1995-），男，硕士研究生，E-mail： zhai_weidong@qq.com；通讯作者：李燕乐（1989-），男，博士，副研究员，E-mail： yanle.li@sdu.edu.cn

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