Table 4 Simulation results of the copper cup
From: Applying a punch with microridges in multistage deep drawing processes
Stage | Original/Modified design | ||
|---|---|---|---|
Forming height (mm) | Thickness difference percentage (%) | Maximum deformed load (N) | |
First stage | 4.5/4.5 | 10.85/10.85 | 2816/2816 |
Second stage | 5.9/5.9 | 13.73/13.73 | 3147/3147 |
Third stage | 7.1/– | 16.58/– | 1103/– |
Fourth stage | 8.5/8.6 | 20.07/19.68 | 1495/2326 |
Fifth stage | 10.2/9.8 | 23.08/23.55 | 1646/1266 |
Sixth stage | 13.4/– | 25.71/– | 2414/– |
Seventh stage | 14.4/14.2 | 28.35/25.50 | 918/2435 |
Eighth stage | 15.7/15.5 | 29.25/30.53 | 657/730 |