Ultrasonic vibration-assisted single point incremental forming of hemispherical shaped component using AA3003 material

ABSTRACT

Ultrasonic vibration-assisted single point incremental forming is a recent hybrid process variant of the single point incremental forming process. In this process, longitudinal ultrasonic vibration is used as an assistance in the conventional forming process. In this paper, the effect of amplitude of vibration in the ultrasonic vibration assisted single point incremental forming process have been researched. For the same, experimental work has been carried out by forming the hemispherical shaped components using multistage forming strategy. Moreover, numerical simulation work has been carried out using the LSDYNA solver and the results have been discussed in the light of depth of forming and strain distribution. The experimental fracture forming line is also developed for the AA3003 material for single point incremental forming process. High amplitude of vibration of 12 micron with 20 kHz frequency leads to poor formability; however, the lower amplitude of vibration of 8 micron with 30 kHz frequency leads to good formability.

KEYWORDS:

• Ultrasonic; SPIF
• USPIF
• acoustic softening
• acoustic hardening

Acknowledgements

Authors would like to acknowledge the funding support received from Gujarat Council on Science and Technology (GUJCOST) in the form of Minor Research Project. Project No: GUJCOST/MRP/2015-16/2623 Approval Date: 28/03/2016.

Disclosure statement

No potential conflict of interest was reported by the author(s).

Additional information

Funding

The work was supported by the Gujarat Council on Science and Technology(GUJCOST) [Project No: GUJCOST/MRP/2015-16/2623].