Influences of Vibration Parameters on Formability of 1060 Aluminum Sheet Processed by Ultrasonic Vibration-Assisted Single Point Incremental Forming

Table 1

Definitions of meshing, material model selection, and contact and boundary conditions.

Meshing	Workpiece	Mesh type: S4R
		Number of units: 19600
	Tool head	Analytical rigid
Material model selection	Workpiece	Model: plastic model of shell metal
		Material: 1060 aluminum sheet (elastic modulus = 70 GPa; Poisson’s ratio = 0.3; density = 2710 kg/m^3)
Contact condition	Contact type between tool head and aluminum sheet: surface-to-surface
Boundary conditions	Workpiece	6 degrees of freedom (DOFs) constraint
	Tool head	Anticlockwise rotation around the sheet