Numerical simulation of wall thickness variation in single point incremental forming of TA1 sheet

Titanium and its alloys are increasingly used. At present, single point progressive forming technology has been applied to the forming of titanium and its alloys, but there is still a problem of excessive thinning of the wall thickness of the formed parts, which seriously affects the forming quality of the forming parts. In this paper, the influence of the process parameters such as tool head diameter, bottom edge length, original thickness and pitch on the average wall thickness reduction rate and the maximum wall thickness reduction rate of the forming parts are studied by using Abaqus finite element simulation software and the principle of single variable. The results show that the average wall thickness reduction rate increases with the increase of tool head diameter, and the maximum wall thickness reduction rate decreases; The average wall thickness reduction rate and the maximum wall thickness reduction rate increase with the increase of the bottom edge length; The original thickness of the plate increases, and the average wall thickness reduction rate and the maximum wall thickness reduction rate decrease; With the increase of pitch, the average wall thickness reduction rate decreases gradually, and the maximum wall thickness reduction rate increases gradually.